Which of the following is a quadratic polynomial - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

A
$x + 2$
B
$x^{2} + 2$
C
$x^{3} + 2$
D
$2 x + 2$

Solution:

Here, we have to find the quadratic polynomial out of given options.
A quadratic polynomial is a kind of polynomial in which the variable’s highest degree is 2.
In option 1),

x + 2

is a linear polynomial because the degree of

x

1 .

In option 2),

x^{2} + 2

is a quadratic polynomial because the degree of

x

2 .

In option 3),

x^{3} + 2

is a cubic polynomial as its degree is 3.
In option 4),

2 x + 2

is a linear polynomial because the degree of

x

1 .

So,

x^{2} + 2

is the only quadratic polynomial out of the four given polynomials.
Hence, option 2 is correct.

Solution:

Related content