From:- __________ 7 + x - x^2 take away 9 + x + 3x^2 + 7x^3
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Step-by-step explanation:
(i) 7x3y + 9yx3 = (7 + 9)x3y = 16x3y ... 5x3 + 3x3 + 3x3 - x3 - 5x2 + 2x2 - 2x2- x 2 - x2 + 6x - 9x + 4x - 9x + x + 7 – 8 - 4 ...
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