Introduction to value of a polynomial — lesson. Mathematics CBSE, Class 9.

PDF chapter test TRY NOW

The value of the polynomial

$p(x)$ at

$x=a$ is

$p(a)$ acquired when

$x$ is replaced by

$a$ (

$a∈R$ ).

Example:

Write the value of

$p(x) = x^2+2x-1$ at

$x = 3$ .

The value of

$p(x)$ at

$x = 3$ can be obtained by substituting the point

$x = 3$ in the polynomial.

Substitute

$x=3$ in the polynomial

$p(x)$ .

$p(3) =$

$3^2+2(3)-1$

$=9+6-1$

$=14$ .

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content