Question

Aduceti la o forma mai simpla :
a) (b-8)la2 -(64-6b)
b)(y+2)la 2-2y(y+2)

Answer 1

a). (b-8)^2 - (64-6b) = b^2 - 16b + 64 - 64 + 6b = b^2 - 10b = b(b-10)
b). (y+2)^2 - 2y(y+2) = y^2 + 4y + 4 - 2y^2 - 4y = 4 - y^2 = (2-y)(2+y)