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First, calculate the fourth power of 3: .
Then, apply the absolute value:
since 81 is positive, .
Finally, apply the negative sign outside the absolute value: .
Determine the absolute value of the following number:
\( \left|18\right|= \)
The negative sign is outside the absolute value bars! This means we calculate first, then apply the negative to get .
(negative outside), but (negative inside). The position of the negative sign completely changes the answer!
Always calculate the exponent first! Order of operations says: Parentheses, Exponents, then other operations. So , then .
Absolute value itself is always positive or zero. However, when there's a negative sign outside the absolute value bars (like ), the final result will be negative!
because negative times negative four times equals positive. Then . The result is the same!
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