Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 8 = -6x a. –7.12, 1.12 b. 7.12, –1.12 c. 7.12, 1.12 d. –7.12, –1.12

x = -7.12, 1.12

Step-by-step explanation:

We are given an equation and asked to solve it with quadratic formula

Quadratic formula is given as:

Given equation: x² - 8 = -6x

Rewriting the equation

x² - 8 + 6x = 0

x² + 6x - 8 = 0

Where a = 1; b = 6; c = -8

Putting the values of a, b and c in quadratic formula

      x = 1.12

      x = -7.12

x = -7.12, 1.12

The correct answer option is a. –7.12, 1.12.

Step-by-step explanation:

We are given the following equation and we are to solve it using the quadratic formula:

Re-arranging this equation in order of decreasing power:

Using the quadratic formula:

Substituting the given values in the formula to get:

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

d

step-by-step explanation: