1. (x + 3)² 2. (x + 8)² 3. (x - 7)³ 4. (3b + 4)² 5. (2a + 3)²

1.(x+3)²=x²+6x+9
2.(x+8)²=x²+16x+64
3.(x-7)³=1.a³+3.a².b+3.a.b²+1.b³
=1.x³+3.x².(-7)+3.x.(-7)²+1.(-7)³
=x³-21x²+147x+34
4.(3b+4)²=3b²+24b+16
5.(2a+3)²=2a²+12a²+9
#sorry klau salah