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Subtract:-2(xy)2 (y3 + 7x2y + 5) from 5y2 (x2y3 – 2x4y + 10x2) |
Answer» 5y2 (x2y3 – 2x4y + 10x2) – [(-2)(xy)2 (y3 + 7x2y + 5)] = [5y2 (x2y3) – 5y2 (2x4y) + 5y2 (10x2)] – [(-2)x2y2 (y3 + 7x2y + 5)] = (5y55x2 – 10x4y3 + 50x2y2) = 5x2y5 – 10x4y3 + 50x2y2 – [(-2x2y5) – 14x4y3 – 10x2y2] = 5x2y5 – 10x4y3 + 50x2)y2 + 2x2 y5 + 14x4)y3 + 10x2)y2 = (5 + 2)x2y5 + (-10 + 14)x4y3 + (+50 + 10)x2y2 = 7x2y5 + 4x4y3 + 60x2y2 |
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