Question

(x+5) elevado ao quadrado -x (x+3)

Answer 1

$(x+5)^2 -x(x+5) = 0 \\\\ (x+5)(x+5) - x.x - x.5 = 0 \\\\ x^2 + 5x + 5x + 25 - x^2 - 5x = 0 \\\\ x^2 - x^2 + 10x - 5x + 25 = 0 \\\\ 5x + 25 = 0 \\\\ 5x = -25 \\\\ x = \frac{-25}{5} \\\\ x = -5$

S = {-5}

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