The nature of roots of the quadratic equation 9x2 – 6x – 2 = 0 is:(a) No real roots (b) 2 equal real roots(c) 2 distinct real roots (d) More than 2 real roots
Question
The nature of roots of the quadratic equation 9x² – 6x – 2 = 0 is:
(a) No real roots
(b) 2 equal real roots
(c) 2 distinct real roots
(d) More than 2 real roots
Solution
To determine the nature of the roots of the quadratic equation 9x^2 - 6x - 2 = 0, we can use the discriminant formula. The discriminant (D) is given by the equation D = b^2 - 4ac, where a, b, and c are the coefficients of the quadratic equation.
In this case, a = 9, b = -6, and c = -2. Substituting these values into the discriminant formula, we have D = (-6)^2 - 4(9)(-2).
Simplifying further, D = 36 + 72 = 108.
Now, let's analyze the value of the discriminant:
- If D > 0, then the quadratic equation has two distinct real roots.
- If D = 0, then the quadratic equation has two equal real roots.
- If D < 0, then the quadratic equation has no real roots.
In our case, D = 108, which is greater than 0. Therefore, the nature of the roots of the quadratic equation 9x^2 - 6x - 2 = 0 is (c) 2 distinct real roots.
Similar Questions
What are the roots of the quadratic equation x^2 - 5x + 6 = 0 ?a.x = -2, x = -3b.x = -2, x = 3c.x = 2, x = -3d.x = 2, x = 3
If the roots of equation 𝑥2 − 6𝑥 + 𝑘 = 0 are real and distinct, then value of k is:(a) > –9(b) > –6(c) < 6(d) < 9
Solve the equation for all real solutions in simplest form.2, x, squared, minus, 9, x, minus, 2, equals, 02x 2 −9x−2=0
The number of real values of k for which the equation 2x²-6x+ k = 0 has two distinct roots in [0, 1] is041infinitely many
For which of the following quadratic equations are the roots 2 and 5?x2 + 7x - 10 = 0x2 - 11x - 10 = 0x2 - 7x + 10 = 0x2 - 3x - 10 = 0
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.