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First you must put everything to the left side, leaving only zero on the right. The original equation is:

x2 + 3x + 7 = 9

Subtract 9 on each side:

x2 + 3x - 2 = 0

This is the same as:

1x2 + 3x - 2 = 0

Therefore, the coefficients are: a = 1, b = 3, c = -2. Replace these in the quadratic equation.

Q: Put the equation ''x2 plus 3x plus 7 equals 9 into the quadratic formula?

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Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523

Using the quadratic equation formula:- x = -4.706950048 and x = 0.849071913

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