Question

subtract 2x²+5x-7 from 7x²-5x+3
explain this​

Answer 1

Step-by-step explanation:

$(7x²-5x+3) - (2x²+5x-7) \\ \\ (7x²-5x+3 - 2 {x}^{2} - 5x + 7) \\ \\ 5 {x}^{2} - 10x + 10$

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Answer 2

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$7x {}^{2} - 5x + 3 - (2x {}^{2} + 5x - 7) \\ = 7x {}^{2} - 5x + 3 - 2x {}^{2} - 5x + 7 \\ = 7x {}^{2} - 2x {}^{2} - 5x - 5x + 3 + 7 \\ = 5x {}^{2} - 10x + 10 \\ = 5(x {}^{2} - x - 1)$