Question

tim x

x²-8x=-16

Answer 1

x^2-8x+16=0

(x+4)^2=0

x+4=0

x=-4

Answer 2

x²-8x=-16

<=>\(x^2-8x+16=0\)

<=> \(\left(x-4\right)^2=0\)

<=>\(x-4=0\)

<=>\(x=4\)