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Plzzz help me mate in this |
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Answer» Answer: FACTORING a^3 + B^3 = (a + b) (a^2 - AB + b^2) a/b + b/a = 1 Common DENOMINATOR is ab (a^2 + b^2) / ab = 1 Multiply both sides by ab a^2 + b^2 = ab Subtract ab from both sides a^2 - ab + b^2 = 0 But this is ONE of our factors of a^3 + b^3 so a^3 + b^3 = 0 |
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