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Chapter 1: Q41. (page 9)

Evaluate each expression ifw=6,x=0.4,y=12, andz=-3

41.zx+1

Short Answer

Expert verified

Expression zx+1 results into -4.2

Step by step solution

01

- Order for simplification 

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

- Substitute given values

Substitute 0.4for xand -3forz into given expression

zx+1=-30.4+1

03

- Simplify -30.4+1

To evaluate the value of the given expression, first simplify the expression inside the parenthesis and then simplify as shown below

鈭�30.4+1=鈭�31.4=鈭�4.2

Thus, value of zx+1-4.2is

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