Question

решите уравнение (x+6)^2=(x-4)^2

Answer 1

Х^2+12х+36=х^2-8х+16
12х+8х=-36-16
20х=-20
Х=-1..................

Answer 2

(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