Factorise 27x^2-75y^2

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Factorise 27x^2-75y^2

Posted by Swapna Tripathydash 5 years ago

ICSE & ISC > Class 09 > Mathematics

1 answers

Swapna Tripathydash 4 years, 8 months ago

= 3{9x^2-25y^2}. = 3{(3x)^2-(5y)^2} = 3{(3x+5y)(3x-5y)}. Using the identity of a^2-b^2=(a+b)(a-b) = 3(3x+5y)(3x-5y) (ANS)

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