Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x? -171012-47(9
207)
11 VC-12-47709
2(7)
-17-12-479
2(7)
X
11 16-1)2+46709
207)
X=
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which expression represents the approximate length of bc?

step-by-step explanation:

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a