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scZoUnD [109]
3 years ago
9

Solve this quadratic equation using the quadratic formula. x2 + 8x - 5 = 0

Mathematics
1 answer:
jasenka [17]3 years ago
7 0
X^2 + 8x - 5 = 0
a = 1, b = 8, c = -5
x = ( - 8 + - sqrt(64 - 4*1*-5))/2
x = ( -8 + - sqrt(64+20))/2
x = ( -8 + - sqrt (84))/2
x = ( - 8 + - 2sqrt21))/2
x = -4 + - sqrt21
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