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Question

Add in a vertical arrangement.

(1) p2 − 2p + 7; p3 + 2p2 + 3
(2) m2 − 3m − 9; m3 + 5m − 4
(3) 2x3 − 3x2y + 5xy2 − 4y3; −x3 + 2x2y − 4xy2 + 3y3

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Solution

(1) p2 − 2p + 7; p3 + 2p2 + 3

p2-2p+7+p3+2p2+0p+3p3+3p2-2p+10

(2) m2 − 3m − 9; m3 + 5m − 4

m2-3m-9+m3+0 m2+5m-4m3+m2+2m-13

(3) 2x3 − 3x2y + 5xy2 − 4y3; −x3 + 2x2y − 4xy2 + 3y3

2x3-3x2y+5xy2-4y3+-x3+2x2y-4xy2+3y3x3-x2y+xy2-y3

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