Topics
Quadratic Equations
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India
Class X

Quadratic relationships

Lesson
Practice

Interactive practice questions

Find the value of the quadratic expression $3x^2$3x2 for each of the following $x$x-values.

a

$x=5$x=5

b

$x=-5$x=−5

Easy
1min

Find the value of the quadratic expression $3x^2+1$3x2+1 when $x=1$x=1.

Easy
< 1min

Find the value of the following quadratic expression when $x=7$x=7.

$4x+5x^2$4x+5x2
Easy
< 1min

Find the value of the following quadratic expression when $x=8$x=8.

$6x^2+5x-4$6x2+5x−4
Easy
< 1min
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Outcomes

10.A.QE.1

Standard form of a quadratic equation ax^2 + bx + c = 0, (a ≠0). Solution of quadratic equations (only real roots) by factorization and by completing the square, i.e., by using quadratic formula. Relationship between discriminant and nature of roots. Problems related to day-to-day activities to be incorporated

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