Question

решите уравнение (х+16)^2+(х-20)^2=2х^2

Answer 1

(х+16)^2+(х-20)^2=2х^2
х^2+32х+256+х^2-40х+400-2х^2=0
-8х+656=0
8х=656
х=656÷8
х=82