Answers

2014-07-24T20:17:42+08:00
Simplifying (3x2 + -4x + -4y) + (7x2 + -2y + -2) + (-4x2 + x + -1y + -7) 
=-4y + -2 + 7x2 + -2y + -7 + x + -4x2 + -1y
=-9 + -3x + 10x2 + -4x2 + -4y + -2y + -1y
= -7y -9 + -3x + 6x2 + -7y
=-14y -6x2 -3x -9
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2014-07-26T22:36:49+08:00
3x^2-4x-4y 7x^2+0-2y-2 + -4x^2+x-y-7 ----------------- 6x^2-3x-7y-9
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