Answer: 84
Step-by-step explanation:
Follow the Pemdas Rule while answering questions.
1. P: Parentheses
2. E: Exponents
3. M and D: Multiplication and Division (from left to right)
4. A and S: Addition and Subtraction (from left to right)
Step 1: Use Exponents
9^2 + 2 ⋅ 4 − 5
81 + 2 x 4 - 5
Since there are no parentheses we would start solving the equation with exponents.
9^2 would be 81 since 9x9=81
Step 2: Use Multiplication
9^2 + 2 ⋅ 4 − 5
81 + 2 x 4 - 5
81 + 8 - 5
The next step to do is multiplication and division. Since the is no division in this question we would just multiply the 2 and 4 which would equal to 8.
Step 3: Addition and Subtraction
9^2 + 2 ⋅ 4 − 5
81 + 2 x 4 - 5
81 + 8 - 5
Addition and Subtraction are the next steps. Since there are both operations in this step we would just solve it left to right.
81 + 8= 89
89-5= 84
FINAL ANSWER: 84