If the quadratic equation ax^2 + bx + c = 0 has two real and equal roots, then c is equal to... | MCQ 1m | Maths | SuperPadhai

Quadratic Equations > Question

MCQ1 markYear: 2023EasyCBSE Class 10

quadratic-equationsdiscriminantequal-roots

Question

If the quadratic equation

a x^{2} + b x + c = 0

has two real and equal roots, then

c

is equal to

Solution

1

For equal roots, discriminant

= 0

:

b^{2} - 4 a c = 0 \Rightarrow c = \frac{b ^{2}}{4 a}

.

+1 mark

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