factorise : 4x^2 + 9y^2 - 25z^2 -12xy
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Hello user
factorise : 4x^2 + 9y^2 - 25z^2 -12xy
(2x - 3y)^2 - (5z)^2
Using indentity , a^2 - b^2 = (a+b)(a-b), we have
(2x-3y+5z)(2x-3y-5z)
Hope it works
factorise : 4x^2 + 9y^2 - 25z^2 -12xy
(2x - 3y)^2 - (5z)^2
Using indentity , a^2 - b^2 = (a+b)(a-b), we have
(2x-3y+5z)(2x-3y-5z)
Hope it works
bijaysaha63:
but where is 12xy...And how 3y^2 had became negative
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(2x) ² + (3y) ² - (5z) ² - 2 *2x *3y
= ( 2x - 3y )² - (5z) ²
= (2x-3y+5z)(2x-3y-5z)
hope it helps mark as brainliest
= ( 2x - 3y )² - (5z) ²
= (2x-3y+5z)(2x-3y-5z)
hope it helps mark as brainliest
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