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orWatch a videoSolve the system of equations.y=–27x+8y=x2–27x–28Write the coordinates in exact form. Simplify all fractions and radicals.

Question

Solve the system of equations.

The equations are:

  1. y=27x+8 y = -27x + 8
  2. y=x227x28 y = x^2 - 27x - 28

Write the coordinates in exact form. Simplify all fractions and radicals.

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Solution

To solve the system of equations, we need to set the two equations equal to each other because they both equal y.

So, we have:

-27x + 8 = x^2 - 27x - 28

We can simplify this by adding 27x to both sides and adding 28 to both sides:

0 = x^2 - 28 + 8

0 = x^2 - 20

To solve for x, we need to find the square root of 20. However, since this is a quadratic equation, we need to consider both the positive and negative roots. So, x can be either sqrt(20) or -sqrt(20).

Substitute x = sqrt(20) and x = -sqrt(20) into the original equations to find the corresponding y values.

For x = sqrt(20):

y = -27(sqrt(20)) + 8

y = sqrt(20)^2 - 27(sqrt(20)) - 28

Simplify to get the exact form of the coordinates.

Do the same for x = -sqrt(20).

This will give you the exact coordinates of the solutions to the system of equations.

This problem has been solved

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