Evaluate:- (2x-5y)(3x+7y)(8x-9y)
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Answer:
−48x^3 + 62x^2y + 271xy^2 − 315y^3
Step-by-step explanation:
= - (2x - 5y) (3x + 7y) (8x - 9y)
= (( − (2x − 5y)) (3x + 7y)) (8x − 9y)
= (( − (2x − 5y)) (3x + 7y)) (8x) + (( − (2x − 5y)) (3x + 7y)) (− 9y)
= −48x^3 + 8x^2y + 280xy^2 + 54x^2y − 9xy^2 − 315y^3
= −48x^3 + 62x^2y + 271xy^2 − 315y^3
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