math homework 9th grade

Question

3x = -x² + 8x

Answer 1

3x = -x² + 8x

0 = -x² + 5x

0 = -x(x - 5)

{0, 5}

Answer 2

x = 0 and x = 5 Please see video for details.

Answer 3

If x not equal 0, divide through by -x

-3=x-8

add 8 to each side

5=x

Answer 4

Assuming you want a solution.

3x = -x² + 8x

0 = -x² + 5x

0 = -x(x - 5)

{0, 5}