Question

Решите уравнение (2-x)^2+(9-x)^2=2x^2-3

Answer 1

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Answer 2

4-4х+х^2+81-18х+х^2=2х^2-3
85-22х+2х^2=2х^2-3
85-22х=-3
-22х=-3-85
-22х=-88
х=4