Answer:
x=64
Step-by-step explanation:
* change equivalent to to = *
now we have x² - 16x + x = (x-8)²
step 1 simplify both sides
(x)²=x²
-8x*2=16x
8=64
-16x + x = 15x
now we have x² -15x = x² - 16x + 64
step 2 subtract x² from each side
x² -x² = 0
x² - x² cancels out
now we have -15x = -16x + 64
step 3 add 16x to each side
-15x + 16x = x
-16x + 16x cancels out
we're left with x = 64
