Question

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class 10
ch 4​

Answer 1

Answer:

for quadratic equation ax^2+bx+c

discriminant is b^2-4ac

I'd discriminant is negative then roots are complex .

if discriminant is equal to zero,then roots are equal and real.

if discriminant is positive then roots are different vand real.

For example 4x^2+3x+5

a is 4

b is 3

c is 5

discriminant is 3^2-4×4×5= -71 which is negative.

so nature of roots is complex

Answer 2

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