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babunello [35]
3 years ago
13

Using the quadratic equation formula to solve 7x^2-x=7, what are the values of x

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0

quadratic formula:

x = <u>-b ± √(b² - 4ac)</u>

             2a

7x² - x = 7

subtract 7 from both sides:

7x² - x - 7 = 0

plug values into the quadratic formula:

x = <u>-(-1) ± √((-1)²- 4(7)(-7))</u>

               2(7)

simplify:

x = <u>1 ± √(197)</u>

           14

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