Question

(x + 5) . (x - 3) = 2x + 1 Conta completa pf

Answer 1

${x}^{2} - 3x + 5x - 15 = 2x + 1 \\ {x}^{2} - 3x + 5x - 15 - 2x - 1 = 0 \\ {x}^{2} - 16 = 0 \\ \\ x = \sqrt{16} \\ x = + 4 \: e - 4$