Решите уравнение (x+6)^2=(x-4)^2
Х^2+12х+36=х^2-8х+16 12х+8х=-36-16 20х=-20 Х=-1..................
(х+6)^2=(х-4)^2 х^2+12х+36=х^2-8х+16 12х+36=-8х+16 12х+36+8х-16=0 20х+20=0 х+1=0 х=-1