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Multiplication of Any Polynomial

Solve 4x+5y...

Question

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

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Solution

$(4 x + 5 y) (4 x - 5 y) = {(4 x)}^{2} - {(5 y)}^{2}$

$= 16 x^{2} - 25 y^{2}$

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Similar questions

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

Expand the following using identities

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

8 (4 x + 5 y)^{2} - 12 (4 x + 5 y)

Q. Solve by cross multiplication method:

4 x - 5 y = - 7

4 x - y = 5

4 x + 5 y = 7

3 x + 4 y = 5

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