Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?
1 answer:
For future reference, use a * to show the multiplication sign because in math x is a variable. 7*2 = 9 + x
Now multiply 7*2= 14
14 = 9 + x
Now subtract 9 from both sides to isolate the x
5 = x or x= 5
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~PumpkinSpice1
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