3x - 4y =5 , xy = 3 . Find 27 x^3 - 64 y^3
Please answer fast ... I will give a thanks and mark as brainliest. ...
mowjoshu:
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We apply the formula of:
(a+b)^3 = a^3 - b^3 - 3ab(a-b)
(a+b)^3 = a^3 - b^3 - 3ab(a-b)
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