Question

Efetue as multiplicacoes a) (a+5) (a2+3a+2

Answer 1

$(a + 5)( {a}^{2} + 3a + 2) \\ propriedade \: distributiva \\ a \times {a}^{2} = {a}^{3} \\ a \times 3a = 3 {a}^{2} \\ a \times 2 = 2a \\ 5 \times {a}^{2} = 5 {a}^{2} \\ 5 \times 3a = 15a\\ 5 \times 2 = 10 \\ {a}^{3} + 3 {a}^{2} + 2a + 15a + 10+5a2 \\ {a}^{3} + 8 {a}^{2} + 17a + 10$