3 years ago

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 = -b ± √(b² - 4ac)

7x² - x = 7

subtract 7 from both sides:

7x² - x - 7 = 0

plug values into the quadratic formula:

x = -(-1) ± √((-1)²- 4(7)(-7))

2(7)

simplify:

x = 1 ± √(197)

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