Question

(4x + 5y) (4x - 5y)
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Answer 1

4x+5y(4x-5y)

16x^2-20xy+20xy-25y^2

16x^2-25y^2

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Answer 2

Answer:

By algebraic identity a^2-b^2=(a+b) (a-b)

therefore, (4x+5y) (4x-5y)

=4x^2-5y^2

Answer by #shinchanlover❤ ❤ ❤

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