x^2+10x+21/x+3

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x^2+10x+21/x+3

Guest Oct 26, 2014

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Best Answer

If the problem is (x² + 10x + 21) / (x +3):

Factor the numerator: (x + 7)(x + 3)

The problem is now: (x + 7)(x + 3) / (x + 3)

Cancel the x + 3 factor in the numerator with the x + 3 factor in the denominator, leaving x + 7.

geno3141 Oct 26, 2014

geno3141 · Answer 1 · 2014-10-26T09:27:08

If the problem is (x² + 10x + 21) / (x +3):

Factor the numerator: (x + 7)(x + 3)

The problem is now: (x + 7)(x + 3) / (x + 3)

Cancel the x + 3 factor in the numerator with the x + 3 factor in the denominator, leaving x + 7.