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Mathematics, 14.12.2020 18:00 ddaly55

9 10
Which equation shows the quadratic formula used correctly to solve 7x² = 9 + x for x?
-171012-4079
O X=
2(7)
1+1-1)2-4(7)(9)
O X=-
2(7)
0 X =
-1+ (-1)2+4/7)(9)
2(7)
1+ (-1)2+4(0.09
X =
207)

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

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