question number 39 factorise it plz
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81x^4-y^4
Here we can apply the identity a^2-b^2= (a+b)(a-b).
So, (81x^4-y^4)= (9x^2)^2-(y^2)^2 so,
(9x^2+y^2)(9x^2-y^2)
I HOPE YOU CAN FACTORISE IT FURTHER BY YOURSELF. IF ANY PROBLEM, TELL IT DOWN IN THE COMMENT BOX.
HOPE THIS HELPS.
Here we can apply the identity a^2-b^2= (a+b)(a-b).
So, (81x^4-y^4)= (9x^2)^2-(y^2)^2 so,
(9x^2+y^2)(9x^2-y^2)
I HOPE YOU CAN FACTORISE IT FURTHER BY YOURSELF. IF ANY PROBLEM, TELL IT DOWN IN THE COMMENT BOX.
HOPE THIS HELPS.
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