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Chapter 1: Q16. (page 18)

Evaluate the expression 521-32.

Short Answer

Expert verified

The value of expression is60.

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 – Simplify expression in grouping symbol

The expression is provided as 521-32

To evaluate the expression, expand the exponent and then subtract the resulting number from 21 as shown

5(21鈭�32)=5(21鈭�9)=5(12)

03

Step-3 – Multiply the numbers

To simplify further, multiply the resulting numbers to get

5(21鈭�32)=5(12)=60

So, the value of the expression is 60.

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