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09-10-2018
Mathematics

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Solve using the quadratic formula. 2x2 + 9x + 8 = 0 Write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth.

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jordann399 jordann399

22-10-2018

2 x 2 + 9x + 8 = 0
4 + 9x + 8 = 0
12 + 9x = 0 (subtract 12 from each side)
9x = -12 (divide by 9 on each side)
x = -12/9

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