Mathematics, 19.09.2020 01:01 timothymoles

Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x? x = StartFraction negative 1 plus-or-minus StartRoot (negative 1) squared minus 4 (7) (9) EndRoot Over 2 (7) EndFraction x = StartFraction 1 plus-or-minus StartRoot (negative 1) squared minus 4 (7) (9) EndRoot Over 2 (7) EndFraction x = StartFraction negative 1 plus-or-minus StartRoot (negative 1) squared +4 (7) (9) EndRoot Over 2 (7) EndFraction x = StartFraction 1 plus-or-minus StartRoot (negative 1) squared +4 (7) (9) EndRoot Over 2 (7) EndFraction

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

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