Question

The roots of quadratic equation 5x2-4x+5=0 are
a) real and equal
b) real and unequal
c) non-real
d) non-real and equal

Answer 1

Answer:

It depends on the determinant (or) discriminant

D = √b² - 4ac

= √16 - 100

= √-84

Hence, there are no real roots. So, the roots are non-real.

By applying the formula (-b ± √b² - 4ac)/2a

We get the roots as  -0.4 ± √(21)/5i

So, your answer would be c) non-real

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