Question

find the discriminant of x square + bx + c equal to zero

Answer 1

D = 0
D = b square - 4ac
0 = b square - 4c
4c = b square
c = b square/4

Answer 2

Given:

Discriminant is 0.

We know that :

b² - 4 ac is the discriminant

x^2 + b x + c

Comparing with ----------- a x ² + b x + c

a = 1

b²  - 4 c = 0

Thus:

b²  = 4 c

Hence the equation has real and equal roots

Hope it helps

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