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I'd substitute the values -2, 8 and 130 into the quadratic formula and wind up with two real solutions: 2 plus or minus -1 times the square root of 69

x = -6.306623862918075

x = 10.306623862918075

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9y ago
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9y ago

For a start, take out the common factor, 2. After that, you can try to factor the trinomial. If you have trouble with that, use the quadratic equation.

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Q: What method(s) would you choose to solve the quadratic equation -2x2 8x 130?
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