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Determine whether the polynomial is a difference of squares and if it is, factor it.

y2 – 25x + 25


is not a difference of squares
is a difference of squares: (y – 5)2
is a difference of squares: (y – 5)(y + 5)
is a difference of squares: (y + 5)2

Sagot :

Just by the language difference means subtract, 

Y^2-25 is the difference of squares
factored it's the sum and difference of their square roots

(x+5) (x-5)

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