sederhanakan soal berikut. a.(x+2)(x+2) b.x-4x+45-(30)

A.(x+2)(x+2)
=x²+2x+2x+4
=x²+4x+4
B.x-4x+45-(30)
=-3x+15
Semoga membantu

a.
(x+2)(x+2)
= x(x+2) + 2(x+2)
= x²+2x + 2x + 4
= x² + 4x + 4

b.
x-4x+45-30
= -3x + 15