Question

Rozwiąż równanie (x-3)(x+2)=(x+4)(2-x)-14

Answer 1

(x-3)(x+2)=(x+4)(2-x)-14

x² + 2x - 3x - 6 = 2x - x² + 8 - 4x - 14

x² + 2x - 3x - 6 - 2x + x² - 8 + 4x + 14 = 0

2x² + x = 0

x(2x  +1) = 0

x = 0   lub  2x + 1 = 0

                 2x = -1

                   x = -1/2