Question:

Subtract 5x^2-9 from 7x^2-x+1?

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a.2x^2-x+10

b.-2x^2+x-10

c.12x^2-x-8

d.2x^2-x-8

e. none of these

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  1. 7x^2 - 5x^2 -x + 1 + 9

    2x^2 - x + 10


  2. a

  3. 7x^2-x+1-5x^2+9= 2x^2-x+10

  4. 2x² - x + 10

    = (2x+5)(x-2)
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