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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 expressions for x=3 is

(a).9

(b).64

(c).40

Step by step solution

01

Step 1. Given information

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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Most popular questions from this chapter

Fill in <, >or =for each of the following pairs of numbers:

(a) localid="1644070592762" -9__--9

(b) localid="1644070601216" 2__--2

(c)localid="1644070617682" -8__-8

(d)localid="1644070630416" --9__-9

Find the LCM of 18 and 24 using the Prime Factors method.

The length of a rectangle is 7 less than the width. Letwrepresent the width of the rectangle. Write an expression
for the length of the rectangle.

Find the prime factorization of 80.

Simplify9(8-2)-3(15-7)6(7-1)-3(17-9)
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