JEE MATHEMATICS MCQ: QUADRATIC EQUATIONS

1 Easy

1 of 1

Application +4 | -1

a, b \in\{1,2,3,4\}

the number of quadratic equation of the form

a x^2+b x+c=0

which have non-real complex roots is:

View answer and explanation

Correct option: C

Option C (52) is correct because we calculate the total number of possible quadratic equations and subtract the number of equations with real roots.

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{x^2} - px + q = 0

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{x^2} + 4ax + 2 > 0

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a

f\left( x \right) = a{x^2} + bx + c\;

\;f\left( { - 1} \right) < 1,f\left( 1 \right) > - 1,f\left( 3 \right) < - 4\;

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9{x^2} - 18\left| x \right| + 5 = 0

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