Упростить 8(5y+3)^2+9(3y-1)

Question

Упростить 8(5y+3)^2+9(3y-1)

Answer 1

8(25y^2 + 30y + 9) + 27y - 9 = 
= 200y^2 + 240y + 72 + 27y - 9 =
= 200y^2 + 267y + 63