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Mathematics, 28.04.2021 16:00 jchay02

I need this for a test: The sum of 3x^2+5x-6 and -x^2+3x+9 is 1) 2x^2+8x-15

2) 2x^2+8x+3

3) 2x^4+8x^2+3

4) 4x^2+2x-15

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I need this for a test: The sum of 3x^2+5x-6 and -x^2+3x+9 is 1) 2x^2+8x-15

2) 2x^2+8x+...
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