AmancoolLily AmancoolLily

26-04-2016
Mathematics

contestada

What is the value of b^2 0 4ac for the following equation?
2x^2 0 2x 0 1 = 0
04
0
12

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WarLord WarLord

26-04-2016

2x^2 - 2x - 1 = 0 a = 2, b = -2, c = -1 b^2 - 4ac = (-2)^2 - 4(2)(-1) = 4 + 8 = 12
so the answer is 12

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