Math, asked by radhekrishna79, 9 months ago

 Product of (2x+9y)(2x-9y) is:​

Answers

Answered by ahanatarafder06
13

Answer:

(2x + 9y)(2x - 9y)

 =  {(2x)}^{2}  -  {(9y)}^{2}

 = 4 {x}^{2}  - 81 {y}^{2}

By \: using \: the \: identity, \:

(a + b)(a - b) =  {a}^{2}  -  {b}^{2}

Answered by Anonymous
5

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Step by step explanation:-

Given :-

(2x + 9y) ( 2x - 9y)

To find :-

Product

Formula

It is in form of (a + b) ( a - b ) = a²-b²

By using this identity we can solve this problem

Solution:-

(2x + 9y) ( 2x -9y)

(a+b)(a-b) = a²-b²

Similarly,

(2x + 9y) ( 2x -9y) = (2x)² - (9y)²

(2x + 9y) ( 2x -9y) = 4x² - 9y²

So , Required answer is 4x²-9y²

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