factorise :4 a ^2 +12 ab +9b^2 -25 z^2
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Hi friend!!
Given, 4a²+12ab+9b²-25z²
=4a²+6ab+6ab+9b²-25z²
=2a(2a+3b)+3b(2a+3b)-25z²
=(2a+3b)(2a+3b)-25z²
=(2a+3b)²-(5z)²
Using x²-y²=(x+y)(x-y)
=(2a+3b+5z)(2a+3b-5z)
I hope this will help u ;)
Given, 4a²+12ab+9b²-25z²
=4a²+6ab+6ab+9b²-25z²
=2a(2a+3b)+3b(2a+3b)-25z²
=(2a+3b)(2a+3b)-25z²
=(2a+3b)²-(5z)²
Using x²-y²=(x+y)(x-y)
=(2a+3b+5z)(2a+3b-5z)
I hope this will help u ;)
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