Given that a quadratic equation does not have roots on the x - axis, which condition must be true?
a) b^2 - 4ac < 0
b) b^2 - 4ac = 0
c) b^2 - 4ac > 0
Help please!
a) b^2 - 4ac < 0
b) b^2 - 4ac = 0
c) b^2 - 4ac > 0
Help please!
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a) (b^2 - 4ac) < 0
when you sqrt it (for the quadratic formula) you will get a sqrt of a negative number, which is not possible.
Until you get to later maths, where i is introduced.
when you sqrt it (for the quadratic formula) you will get a sqrt of a negative number, which is not possible.
Until you get to later maths, where i is introduced.
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a) b^2 - 4ac < 0
d = b^2 - 4ab
when d < 0, quadratic equation does not have real roots.
d = b^2 - 4ab
when d < 0, quadratic equation does not have real roots.