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Mathematics, 03.11.2020 01:50 JAPONICA

Which equation shows the quadratic formula used correctly to solve 7x2 = 9+ x for x? .-13 (12-41749)
OX-
207)
12 V-12-47)(9)
207
O X-
-1 16-1)2+4(7)(9)
охи
207)
1+ (-1)+4(79)
OX

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