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Chapter 1: Q21. (page 18)

Evaluate the expression when x=3,鈥�y=4,鈥塧苍诲z=5

localid="1648625974017" 4(z鈭�x)

Short Answer

Expert verified

The value of expression is8.

Step by step solution

01

Step-1 – Order of operations

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

Step-2 – Substitute the values

To evaluate the expression 4(z鈭�x), substitute 3 for x and 5 for z, and simplify further using the order of operations as shown below,

4(z鈭�x)=4(5鈭�3)=4(2)

03

Step-3 – Multiply the numbers

To simplify further, multiply the resulting numbers to get

4(z鈭�x)=4(5鈭�3)=4(2)=8

So, the value of the expression is 8.

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