Question

Раскройте скобки:(х-3)^2-(4+х)(х-4)

Answer 1

(x-3)²-(4+x)(x-4)=0
x²-6x+9-4x+16-x²+4x=0
-6x-4x+4x=-9-16
-6x=-25
x=$4 frac{1}{6}$