Решите уравнение (y-4)2-y2=16

Question

Решите уравнение (y-4)2-y2=16

Answer 1

(у-4)2-у2=16
у2-8у+16-у2=16
-8у=0
у=0

Answer 2

(y-4)^2-y^2=16 y^2-8y+16-y^2=16 -8y+16=16 -8y-16=-16 -8y=0 y=0.

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