mswarsip3xjg0
mswarsip3xjg0
10-02-2018
Mathematics
contestada
4x^2+12x+9-2x^2-7x-15
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PeytonBrainly
PeytonBrainly
10-02-2018
4x^2 + 12x + 9 - 2x^2 - 7x - 15
4x^2 - 2x^2 = 2x^2
12x - 7x = 5x
9 - 15 = -6
2x^2 + 5x - 6
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