Question

Me ajude nessa questao,q nao terminei.(Foto)

Answer 1

(x + 1)(x + 1) - 100 = 0
x² + x + x + 1 - 100 = 0
x² + 2x - 99 = 0 <<<<<<<<<<<<
Delta = b² - 4ac
Delta = 4 - 4(1)(-99)
Delta = 4 + 396
Delta = 400
X = (-b +- raiz delta) / 2a
X = (-2 +- 20) / 2
x' = (-2 + 20) / 2 = 18/2 = 9
x" = (-2 - 20) / 2 = -22/2 = -11

BONS ESTUDOS!