Question

Calcule
a)x²=(x+1)(x-3)+13

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CALCULOS PFVR!!

Answer 1

Resposta:

a) x² = (x+1) (x-3) +13
    x² = -x -1 -x +3 +13
    x² +x +x = -1 +3 +13
    x² +2x = 15
    3x = raiz quadrada de 15
    3x = 3.87298334621
    x = 3.87298334621 : 3
    x = 1.29099444874

Resposta Final: x = 1.29099444874