Question

Решите неравенство: (х+3)(х -5)≤0

Answer 1

Ответ:

$(x + 3)(x - 5) \leqslant 0 \\ x {}^{2} - 5x + 3x - 15 = 0 \\ x {}^{2} - 2x - 15 = 0 \\ x = 5 \\ x = - 3$