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17-2x+4x2-12-x+3x2

 Oct 12, 2015
 #1
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17-2x+4x2-12-x+3x2

 

Simplify the following:
4 x^2+3 x^2-x-2 x-12+17

Grouping like terms, 4 x^2+3 x^2-x-2 x-12+17 = (4 x^2+3 x^2)+(-2 x-x)+(17-12):
(4 x^2+3 x^2)+(-2 x-x)+(17-12)

4 x^2+3 x^2 = 7 x^2:
7 x^2+(-2 x-x)+(17-12)

-2 x-x = -3 x:
7 x^2+-3 x+(17-12)

17-12 = 5:
Answer: | 
| 7x^2-3x+5

 Oct 12, 2015

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