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

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asked Jul 3, 2017 95.1k views

2 Answers

Jingle · Answer 1 · 2017-07-07T04:29:47+0000

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

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

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