Solve the Expression: Finding 7^1 - 7^2

Question

Solve the following exercise and circle the correct answer:

$7^1-7^2=$

00:00 Solve

00:04 Let's break down the exponents

00:12 Always solve multiplication and division before addition and subtraction

00:19 Let's continue solving according to the correct order of operations, from left to right

00:23 And this is the solution to the question

To solve the expression $7^1 - 7^2$ , we need to evaluate the powers first before performing the subtraction. The steps are as follows:

Calculate $7^1$ : Since any number to the power of 1 is the number itself, we have $7^1 = 7$ .
Calculate $7^2$ : This means 7 is multiplied by itself, which gives us $7 \times 7 = 49$ .
Subtract the results: Now, perform the subtraction $7 - 49$ .
This yields: $7 - 49 = -42$ .

Thus, the correct answer is $-42$ .

$-42$