Question

4x square +9y square -1

Answer 1

$\huge\sf\pink{Answer}$

☞ Factorisation of the above expression is (2x-3y)(2x+3y-2)

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$\huge\sf\blue{Given}$

✭ 4x²-9y²-4x+6y

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☆ Factorise the above expression.

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$\huge\sf\purple{Steps}$

➳ 4x²-9y²-4x+6y

➳ (2x)²-(3y)²-4x+6y

➳ (2x+3y)(2x-3y) -2(2x-3y)

➳ $\sf\orange{(2x-3y)(2x+3y-2)}$

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More formulas:

a³+b³ = (a+b)(a²+b²-ab)

a³-b³ = (a-b)(a²+b²+ab)

(a+b)² = (a-b)²+4ab

(a-b)² = (a+b)²-4ab

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