Question

Спростити вираз (a+3)(a-2)+(a-3)(a+6)

Answer 1

$(a + 3)(a - 2) + (a - 3)(a + 6) = {a}^{2} + 3a - 2a - 6 + {a}^{2} - 3a + 6a - 18 = 2 {a}^{2} + 4a - 24$