Question

Use suitable identity to find the product of (7 + 5)(7 − 1) with working
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Answer 1

Answer:

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Step-by-step explanation:

We know (x−5)(x−5)=(x−5)

2

Now using identity (x−y)

2

=x

2

−2xy+y

2

Here x=x and y=5

(x−5)

2

=(x)

2

−2×x×5+(5)

2

=x

2

−10x+25