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15-12-2016
Mathematics

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A. 3x^2+2x-7
B. 3x^2+2x-3
C. 3x^2+8x+3
D. 5x^2+8x-7

A 3x22x7 B 3x22x3 C 3x28x3 D 5x28x7 class=

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15-12-2016

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Аноним Аноним

15-12-2016

answer is A. 3x^2+2x-7

4x^2+5x-2 - (x^2+3x+5)
=4x^2+5x-2 - x^2 - 3x - 5
=3x^2+2x-7

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