Mathematics, 26.02.2020 03:13, jojosiwa6

Find the sum of -3x^2 - 7x + 9 and -5x^2 + 6x - 4 , please answer this!

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Find the sum of -3x^2 - 7x + 9 and -5x^2 + 6x - 4 , please answer this!...