Math, asked by sangeetakumaripatna3, 10 months ago

Dav public school book
subject:maths
chapter : 7 algebraic identities

Question is: (x-7)^2

Answers

Answered by samdhi2323

2

Use the identity (x-y)²

(x-y)²=x²+y²-2ab

Therefore,

(x-7)²=x²+(7)²-2(x)(7)

=x²+49-14x

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