From the sum of x square - 7 x + 10 and 6 x square - 7 x + 15 subtract 3 x square - 8 x + 6
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Step-by-step explanation:
(x²-7x+10) + (6x²-7x+15) - (3x²-8x+6)
(7x²-14x+25)-(3x²-8x+6)
4x²-6x+19
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