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Chapter 1: Q5. (page 30)

Evaluate each expression if a=-4 and b=1.5

a+12

Short Answer

Expert verified

The absolute value of expression is8.

Step by step solution

01

Step1- Order of evaluation

To evaluate any expression involving one operation, follow the below order of operation

  • First replace the algebraic expression inside the grouping symbols like modulus brackets ( ) with numeric expression
  • Perform multiplication
  • Perform addition inside the bracket

Evaluate the absolute value

02

Step2- Simplify the expression inside grouping symbol

To evaluate the value of given expression, simply the expression inside the bracket and then find the absolute value of expression as shown below

|a+12|=|鈭�4+12|=|8|

03

Step3- Find the absolute value of expression inside the bracket

The absolute value of 8=8.

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