Class 10 Math All topics Quadratic Equations

Which is a quadratic equation?

(a)

$x+x1 =2$

(b)

$x_{2}+1=(x+3)_{2}$

(c)

$x(x+2)$

(d)

$x+x1 $

Correct answer: (a)

Solution:

Consider the following equation.

Case A-

$x+x1 =2$

$x_{2}−2x+1=0$

Hence, it is quadratic equation.

Case B-

$x_{2}+1=(x+3)_{2}$

$x_{2}+1=x_{2}+6x+9$

$6x+8=0$

Hence, this is not quadratic equation.

While in C and D, these are not equations. Similar topics

introduction to trigonometry

functions

some applications of trigonometry

quadratic equations

polynomials

introduction to trigonometry

functions

some applications of trigonometry

quadratic equations

polynomials

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