Question

(4+y) .(4+y) =
ajudem

Answer 1

(4+y)*(4+y)=
(4+y)²=
4²+2*4*y+y²=
16+2*4*y+y²=
16+8*y+y²=
16+8y+y²=
= y²+8y+16

Answer 2

(4 + y)(4 + y)
16 + 4y + 4y + y²
16 + 8y + y²
y² + 8y + 16