Math, asked by AASHIKA111, 1 year ago

factorise 16p^4-81q^4

Answers

Answered by Muskan1101
15
Here's your answer !!

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 = > 16 {p}^{4} - 81 {q}^{4}

 = > {(4 {p}^{2}) }^{2} - {(9 {q}^{2}) }^{2}

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We will use one identity,that is :-

 = {a}^{2} - {b}^{2} = (a - b)(a + b)
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 = > (4 {p}^{2} - 9 {q}^{2} )(4 {p}^{2} + 9 {y}^{2} )

 = > {((2 {p}^{2}) - (3 {q}^{2} ))}(4 {p}^{2} + 9 {q}^{2} )

 = >(2p - 3q)(2p - 3q)(4 {p}^{2} + 9 {q}^{2})
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Hope it helps you ! :)

Muskan1101: Thanks for brainliest !! :)
Answered by rishijadwivedip912eh
5

= 16p^4  -  81q^4                                                                                                                     = (4p²)²  -  (9q²)²                                                                                                                      = (4p² + 9q²)  (4p² - 9q²)                                                                                                         = (4p² + 9q²)  [(2p)² - (3q)²]                                                                                              = (4p² + 9q²)  (2p + 3q)  (2p - 3q)


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