Упростить (y-4)(y+4)-(y-3)2

Question

Упростить (y-4)(y+4)-(y-3)2

Answer 1

(y-4)(y+4)-(y-3)2=у кв -2у-10

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Answer 2

(y-4)(y+4)-(y-3)^2=y^2+4y-4y-16-y^2+6y-9=6y-25

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