Which equation shows the quadratic formula used correctly to solve 5x2 + 3x - 4 = 0 for x?
-3 = V (3) ? - 4 (5) (-4)
X=
2 (5)
31 V (3) + 4 (5) (-4)
2 (5)
3 + (3) 2-4 (5) (-4
2 (5)
-3 + | (3) 2 + 4 (5) (-4)
2 (5)
+5
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