Knowee
Questions
Features
Study Tools

Make 3 problem questions withSolutions of Rational zeros of polynomial function.

Question

Make 3 problem questions with Solutions of Rational zeros of polynomial function.

🧐 Not the exact question you are looking for?Go ask a question

Solution

  1. Problem Question: Determine the rational zeros of the polynomial function f(x) = 2x^3 - 5x^2 + 3x + 1.

Solution: Step 1: List all possible rational zeros using the Rational Zero Theorem. The possible rational zeros are the factors of the constant term (1) divided by the factors of the leading coefficient (2). In this case, the possible rational zeros are ±1/2 and ±1.

Step 2: Use synthetic division or long division to test each possible rational zero. Start with the first possible rational zero, let's say x = 1/2.

   1/2 | 2   -5   3   1
       |     1/2  -2  1/2
       ---------------
       2   -9/2  1/2 3/2

Step 3: Check the remainder. If the remainder is zero, then x = 1/2 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 4: Repeat steps 2 and 3 for the remaining possible rational zeros. Let's try x = -1.

   -1 | 2   -5   3   1
       |    -2    7  -10
       ---------------
       2   -7    10  -9

Step 5: Check the remainder. If the remainder is zero, then x = -1 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 6: The rational zeros of the polynomial function f(x) = 2x^3 - 5x^2 + 3x + 1 are x = 1/2 and x = -1.

  1. Problem Question: Find the rational zeros of the polynomial function g(x) = 3x^4 - 2x^3 + 5x^2 - 4x + 2.

Solution: Step 1: List all possible rational zeros using the Rational Zero Theorem. The possible rational zeros are the factors of the constant term (2) divided by the factors of the leading coefficient (3). In this case, the possible rational zeros are ±1/3, ±2/3, ±1, and ±2.

Step 2: Use synthetic division or long division to test each possible rational zero. Start with the first possible rational zero, let's say x = 1/3.

   1/3 | 3   -2   5   -4   2
       |     1/3  -1/3 2/3
       -----------------
       3   -5/3  4/3  -10/3  8/3

Step 3: Check the remainder. If the remainder is zero, then x = 1/3 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 4: Repeat steps 2 and 3 for the remaining possible rational zeros. Let's try x = -1.

   -1 | 3   -2   5   -4   2
       |    -3    5  -10   14
       -----------------
       3   -5    10  -14   16

Step 5: Check the remainder. If the remainder is zero, then x = -1 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 6: The rational zeros of the polynomial function g(x) = 3x^4 - 2x^3 + 5x^2 - 4x + 2 are x = 1/3 and x = -1.

  1. Problem Question: Determine the rational zeros of the polynomial function h(x) = x^3 - 4x^2 + 5x - 2.

Solution: Step 1: List all possible rational zeros using the Rational Zero Theorem. The possible rational zeros are the factors of the constant term (-2) divided by the factors of the leading coefficient (1). In this case, the possible rational zeros are ±1 and ±2.

Step 2: Use synthetic division or long division to test each possible rational zero. Start with the first possible rational zero, let's say x = 1.

   1 | 1   -4   5   -2
      |     1   -3   2
      -------------
      1   -3   2    0

Step 3: Check the remainder. If the remainder is zero, then x = 1 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 4: Repeat steps 2 and 3 for the remaining possible rational zeros. Let's try x = -1.

   -1 | 1   -4   5   -2
       |    -1    5  -10
       -------------
       1   -5   10   -12

Step 5: Check the remainder. If the remainder is zero, then x = -1 is a rational zero. If the remainder is not zero, move on to the next possible rational zero.

Step 6: The rational zeros of the polynomial function h(x) = x^3 - 4x^2 + 5x - 2 are x = 1 and x = -1.

This problem has been solved

Similar Questions

Question 1 of 10If the equation of a function is a rational expression, the function is rational.A.TrueB.False

Find a quadratic polynomial each with the given numbers as the sum and product of zeroes respectively:

y = x5 − 10x3 + 9x(a) Find the zeros algebraically. (Enter your answers as a comma-separated list. If there are no real zeros, enter DNE.)

The number of unique zeroes of a quadratic polynomial with value of discriminant equal to zeroSelect an answerAexactly 1Bexactly 3Cexactly 2DNone of these

Find a polynomial with integer coefficients that satisfies the given conditions.Q has degree 3, and zeros 0 and i.

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.