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7 x3y + 4x² y ² - 2 and 4 x3y + 1 - 8x2y2
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7x3y + 9yx3 = (7 + 9)x3y = 16x3y ... 5x3 + 3x3 + 3x3 - x3 - 5x2 + 2x2 - 2x2- x2 - x2 + 6x - 9x + 4x - 9x + x + 7 – 8 - 4 ... (iii) 1− 5y2, take away y3 + 7y2 + y + 1.
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