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14. Expand : (3x-y)³ |
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Answer» Answer: PLEASE MARK as BRAINLIEST answer Step-by-step explanation: (a-b) ^3=a^3-b^3-3ab(a-b) =a^3-b^3-3a^2b+3ab^2 (3x-y)³ =(3x) ^3-(y) ^3-3(3x) ^2(y) +3(3x) (y) ^2 =9x^3-y^3-27x^2y+9xy^2 hope it helps! |
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