What is the result of the expression 7^2 - 15 + 2?
Understand the Problem
The question is asking us to evaluate the mathematical expression $7^2 - 15 + 2$. To solve it, we will first calculate $7^2$, then subtract 15, and finally add 2.
Answer
The final result is $36$.
Answer for screen readers
The final result of the expression $7^2 - 15 + 2$ is $36$.
Steps to Solve
- Calculate the square of 7
First, we calculate $7^2$:
$$ 7^2 = 49 $$
- Subtract 15 from the result
Next, we take the result from the previous step and subtract 15:
$$ 49 - 15 = 34 $$
- Add 2 to the result
Finally, we add 2 to the result from the previous step:
$$ 34 + 2 = 36 $$
The final result of the expression $7^2 - 15 + 2$ is $36$.
More Information
The expression involves basic operations: squaring a number, subtraction, and addition. Squaring is a fundamental concept in mathematics, often used in geometry and algebra.
Tips
- Forgetting to follow the order of operations can lead to mistakes. Always perform squaring first, followed by addition and subtraction according to their sequence.
- Miscalculating the square of a number. Remember, $7^2$ equals 49, not 56 or another number.
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