А) 2 (b+1)(b+3) б) -8 (y-1)(y+5)

Question

А) 2 (b+1)(b+3) б) -8 (y-1)(y+5)

Answer 1

А) 2(b^2+4b+3)=2b^2+8b+6
б) -8(y^2+4y-5)= -8y^3-32y+40

Answer 2

A)2b+2+2b+6=4b+8
б)-8y+8-8y-40