Question

how to find x in x2+16=8x

Answer 1

is that 2x or x^2 (x-squared)?

Answer 2

x squared

Answer 3

then first you subtract 8x on both sides making it become:
x^2 - 8x + 16 = 0
so then you try and simplify this equation so it it becomes:
(x-4)(x-4)= 0
then separate them into:
(x-4)= 0 and (x-4)=0
then for both of them, add 4 on both sides making x=4.
so x = 4.
i hope the answer is right and that it helped you :)