Question

1. Find the following products.
(i) (x + 3) (x2 + 2x - 1)​

Answer 1

Step-by-step explanation:

$(x + 3) \: (x {}^{2} + 2x - 1) \\ x(x {}^{2} + 2x - 1) \: + 3(x {}^{2} + 2x - 1) \\ x {}^{3 } + 2x {}^{2} + 1 + 3x {}^{2} + 6x + 3 \\ x {}^{3} + 5x {}^{2} + 6x + 1$