Asked by Sam
Solve the quadratic equation 5xpower2-3x+8=0
Answers
Answered by
oobleck
online, use ^ for powers to avoid all the cumbersome and sometimes ambiguous words.
5x^2 - 3x + 8 = 0
This has no real solutions. How do you know? The discriminant (b^2-3ac) is negative
So, using the quadratic formula, you get
x = (3±√(3^2-4*5*8))/(2*5) = (3±√-151)/10
or
(3±√151 i)/10
5x^2 - 3x + 8 = 0
This has no real solutions. How do you know? The discriminant (b^2-3ac) is negative
So, using the quadratic formula, you get
x = (3±√(3^2-4*5*8))/(2*5) = (3±√-151)/10
or
(3±√151 i)/10
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