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Chapter 1: Q13. (page 24)

Evaluate the expression when x=-3.

localid="1648799757173" x+-1

Short Answer

Expert verified

The value of the expressionis 4.

Step by step solution

01

Step-1 – Absolute value of a number

Absolute value of any positive or negative number is always positive and equal to the magnitude of the number. The absolute value of a number N is denoted by N.

The absolute value of a number represents the distance of the number from 0 in the number line.

02

Step-2 – Example of Absolute value

The absolute value of 3 is denoted by 3and is equal to 3.

And the absolute value of -4is denoted by -4and is equal to 4.

03

Step-3 – Evaluate the expression

To evaluate the value of the expression x+-1, substitute -3 for x and simplify further as shown below,

x+鈭�1=鈭�3+鈭�1=3+1=4

Thus, the value of the given expression is 4.

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