4 Add the following algebraic expressions :
(i) x3 – 2x2y + 3xy2 – y3, 2x3 - 5xy2 + 3x2y - 4y3
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Answer:
3x^3 -2x^2y- 2xy^2 -5y^3
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Answer:
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
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