Question

(2)
Find the value of p(x) = 3x2 + x + 7 when x = - 2.
one more example and verify.
(3) See whether remainder obtained by division is same as the value of p(-2). Take​

Answer 1

Step-by-step explanation:

Given

p (x)=${3x}^{2}+x+7$

To find:-

p (-2)

Solution:-

p (-2)=${3(-2)}^{2}+(-2)+7$

$={(-6)}^{2}-2+7$

$=36+5$

$=41$

Hence your answer is

${\boxed{41}}$

Extra information :-

polynomials:-

Polynomials are the algebraic expressions which consist of variables and coefficients. Variables are also sometimes called indeterminates. We can perform the arithmetic operations such as addition, subtraction, multiplication and also positive integer exponents for polynomial expressions but not division by variable.

zeros of polynomials:-

A root or a zero of a polynomial are the value(s) of X that cause the polynomial to = 0 (or make Y=0). It is an X-intercept. The root is the X-value, and zero is the Y-value. It is not saying that imaginary roots = 0.