Question

4 x square - 9 X + 7 x square + 5 x minus 1 minus 5 x square - 4 x + 1 is equals to
$(4x {}^{2} - 9x + 7) +( x ^{2} + 5x - 1) - (5x {}^{2} - 4x + 5)$
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Answer 1

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Answer 2

Answer:

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