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Chapter 1: Q.1.11 (page 16)

Evaluate when x=3 (a)x2 (b)4x (c)3x2+4x+1

Short Answer

Expert verified

The value of Algebraic expression

(a).9

(b).64

(c).40

Step by step solution

01

Given expressions are :(a) x2(b)4x(c)3x2+4x+1

We have to evaluate the given expression for x=3.

02

Part (a) Step 1 

Replace x with 3 :

32

=9

The value of the expression is 9.

03

Part (b) Step 1

Evaluate the expression (b). 4x for x=3

Replace x with 3 :

43

=64

The value of he expression is 64.

04

Part (c) Step 1

Evaluate the expression (c) 3x2+4x+1 for x=3

Replace x with 3:

3(3)2+4(3)+1

=27+12+1

=40

The value of the expression is 40.

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