Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?
-11 101...
Mathematics, 10.01.2020 21:31 BreBreDoeCCx
Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?
-11 101)2-47(9)
1
x= -1 ± √(1) 2
2(7)
12v(-(7) (9)
2(7)
x=-11 v(-1)2 +4(7)(9)
2(7)
11 | (-1)2 +4(7)(9)
2(7)
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