Question

Jawab!
1.(X² + 11X + 28) (X + 4)
2.(X³ + X² - 10X - 6) (X - 3)

Answer 1

1. (x² + 11x + 28) (x + 4) = x²(x+4)+11x(x+4)+28(x+4)
=x³+4x²+11x²+44x+28x+112
=x³+15x²+72x+112

2. (x³ + x² - 10x - 6) (x - 3)
=x³(x-3)+x²(x-3)-10x(x-3)-6(x-3)
=x pangkat 4 -3x³+x³-3x³-10x²+30-6x+18
=x pangkat 4 - 2x³-13x²-6x+48

Maaf ya, kalau salah ^^