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Chapter 1: Q. 1.12 (page 16)

Evaluate for x=6: (a)x3 (b)4x (c)6x2-4x-7

Short Answer

Expert verified

The value of the expressions for x=6 are:

(a)216

(b)64

(c)185

Step by step solution

01

Given information

The given Algebraic expressions are:

(a)x3 (b)4x (c)6x2-4x-7

We have to evaluate the given expressions for x=6.

02

Part (a) Step 1 Evaluate the expression for x=6

The expression is x3

Replace x with 6 :

63

=216

The value of the expression is 216.

03

Part (b) Step 1  Evaluate the expression for x=6.

The expression is 2x

Replace x with 6 :

26

=64

The value of the expression is 64.

04

Part (c) Step 1 Evaluate the expression for x=6.

The expression is 6x2-4x-7

Replace x with 6 :

6(6)2-4(6)-7

=216-24-7

=185

The value of the expression is 185.

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