factorise 49 x square - 81 y square
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Answered by
9
49x^2-81^2
=(7x)^2-(9x)^2
=(7x+9x)×(7x-9x)
=(7x)^2-(9x)^2
=(7x+9x)×(7x-9x)
Answered by
2
by using a square - b square = (a+b)(a-b)
(7x+9y)(7x-9y)
(7x+9y)(7x-9y)
NarwalVarsha:
Hope it helps
Mark it as brainliest answer.
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