Решите уравнение: (х+10)²=(2-х)²
(х+10)²=(2-х)² (х+10)² - (2-х)² = 0 (x + 10 - (2 - x)) * ( x + 10 + 2 - x) = 0 ( x + 10 - 2 + x) * 12 = 0 2x + 8 = 0 // : 2 x + 4 = 0 x = - 4
Х²+20х+100=4-4х+х² 20х+4х=4-100 24х=-96 Х=-4