Question

x3- 2x2y+3xy2-y3 ,2x3-5xy2+3x2y-4y3
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Answer 1

Given x3 -2x2y + 3xy2– y3, 2x3– 5xy2 + 3x2y – 4y3 Collecting positive and negative like terms together, we get = x3 +2x3 – 2x2y + 3x2y + 3xy2 – 5xy2 – y3– 4y3 = 3x3 + x2y – 2xy2 – 5y3