Evaluate Exponent: Evaluate the exponent in the expression. The expression given is 15 - 3^2 + 4. We need to start by evaluating the exponentiation part of the expression, which is 3^2. 3^2 means 3 is multiplied by itself, which equals 9. Calculation: 3^2 = 3 × 3 = 9Substitute Result: Substitute the result of the exponentiation into the expression. Now that we know 3^2 equals 9, we can substitute this value back into the original expression. The expression becomes 15 - 9 + 4.Perform Subtraction and Addition: Perform the subtraction and addition from left to right. According to the order of operations, we should perform the subtraction and then the addition. First, we subtract 9 from 15, which gives us 6. Calculation: 15 - 9 = 6 Then, we add 4 to the result. Calculation: 6 + 4 = 10

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$15-3^{2}+4=$

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Grade 8

Powers with negative bases

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15-3^{2}+4=

Evaluate Exponent: Evaluate the exponent in the expression. $\newline$ The expression given is $15 - 3^2 + 4$ . We need to start by evaluating the exponentiation part of the expression, which is $3^2$ . $\newline$ $3^2$ means $3$ is multiplied by itself, which equals $9$ . $\newline$ Calculation: $3^2 = 3 \times 3 = 9$
Substitute Result: Substitute the result of the exponentiation into the expression. $\newline$ Now that we know $3^2$ equals $9$ , we can substitute this value back into the original expression. $\newline$ The expression becomes $15 - 9 + 4$ .
Perform Subtraction and Addition: Perform the subtraction and addition from left to right. $\newline$ According to the order of operations, we should perform the subtraction and then the addition. $\newline$ First, we subtract $9$ from $15$ , which gives us $6$ . $\newline$ Calculation: $15 - 9 = 6$ $\newline$ Then, we add $4$ to the result. $\newline$ Calculation: $6 + 4 = 10$