Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?

Quadratic formula for given equation is

Step-by-step explanation:

Given Quadratic Equation is  7x² = 9 + x

We need to find correct Quadratic formula for the given quadratic equation.

If the quadratic equation is in standard for,

ax² + bx + c = 0

then quadratic formula is given by,

First we rewrite the quadratic equation,

7x² - x - 9 = 0

by comparing with standard form of equation we get,

a = 7  ,   b = -1  and c = -9

oNw putting these value in quadratic formula we get,

Therefore, Quadratic formula for given equation is

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step-by-step explanation: