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Chapter 1: Q18. (page 30)

Evaluate each expression if a=-5, b=6 and c=2.8

-4b

Short Answer

Expert verified

The absolute value of expression is 24

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 matrix brackets () with numeric expression
  • Perform multiplication in 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

|鈭�4b|=|鈭�4脳6|=|鈭�24|

03

Step3- Find the absolute value of expression inside the bracket

The absolute value of |鈭�24|=24

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