Someone please help me thank you

4

Step-by-step explanation:

7x = x² - 8

=> x² - 7x - 8 = 0

use quadratic formula:

a = 1, b = -7, c = -8

x = (pls ignore the "A" I don't know why it's showing up)

=> x =

=> x =

=> x = = 4 or = -5 (the answer is only 4 since it's asking for the positive solution)

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.