When 3x^2 - 2x + 1 is subtracted from 2x^2 + 7x + 5, the result will be _____?
- x^2-9x-4
- x^2+5x+6
- -x^2+9x+4
- None of these
Explanation
To subtract the polynomials:
(2x² + 7x + 5) - (3x² - 2x + 1)
= 2x² + 7x + 5 - 3x² + 2x - 1
= -x² + 9x + 4
To subtract the polynomials:
(2x² + 7x + 5) - (3x² - 2x + 1)
= 2x² + 7x + 5 - 3x² + 2x - 1
= -x² + 9x + 4
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