X^2+7x +12 divide x+3

x + 4

Step-by-step explanation:

Use synthetic division with -3 as the divisor.  This -3 comes from (x + 3).

-3     /      1    7    12

                   -3    -12

             1       4      0

Since the remainder is 0, -3 is a root and (x + 3) is a factor.  The other factor has the coefficients 1 and 4, which works out to (x + 4).

x^2+7x +12 divided by x+3 is x + 4.

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step-by-step explanation: