Please expand these quick
(4a + 5b)³
(5x-3y)³
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(a + b) ^3 is a3 +b3 + 3ab(a+b)
64a^3+125b^3+240a^2b+ 300ab^2
(5x-3y)^3
= 125x^3 - 27b^3 - 225x^2y+135xy^2
64a^3+125b^3+240a^2b+ 300ab^2
(5x-3y)^3
= 125x^3 - 27b^3 - 225x^2y+135xy^2
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