According to the order of operations, expressions inside parentheses are evaluated first, while addition and subtraction are evaluated last. For the given expression, this means evaluating the expression inside the brackets completely before subtracting it from the product.
4^2*3-5(6+3)
For this, we must remember to evaluate expressions in the brackets first, then the exponent, the multiplication next, and finally the difference between the results we get.
Operation
Before Simplification
After Simplification
Add terms
4^2*3-5 (6+3)
4^2*3-5( 9)
Calculate power
4^2*3-5(9)
16*3-5(9)
Multiply
16*3- 5(9)
48- 45
Subtract term
48-45
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.
