According to the order of operations, the expression in the parentheses is calculated first.
( 9^2 - 15* 2 ) Ă· 17
For this, we must remember to first evaluate the expression in parentheses, which includes evaluating the exponent first followed by the multiplication, then the subtraction. After we calculate the expression in parentheses, we can finally divide.
Operation
Before Simplification
After Simplification
Calculate power
( 9^2 - 15* 2 ) Ă· 17
( 81 - 15* 2 ) Ă· 17
Multiply
( 81 - 15* 2 ) Ă· 17
( 81 - 30 ) Ă· 17
Subtract
( 81 - 30 ) Ă· 17
( 51 ) Ă· 17
Divide
( 51 ) Ă· 17
3
The expression equals 3.
Alternative Solution
Using a Calculator
We can also evaluate this expression using a calculator. To do so, type it as shown below.
