Question

A)(y-2)²+y(y+4)при y=–0,5
B)4p(p-5)-(2p-3)²при p=1,25

Answer 1

а)(y^2-4y+4)+(y^2+4y)=2y^2+4=4,25
б)(4p^2-20p)-4p^2+12p-9)=-8p-9=1