Evaluate the expression 2−23−3.
Remove the negative exponent by rewriting 2−2 as 122. A negative exponent follows the rule of a−n=1an
122⋅13−3
Squaring a number is the same as multiplying the number by itself 2⋅2. In this case, 2 squared is 4.
14⋅13−3
Remove the negative exponent by rewriting 3−3 as 133. A negative exponent follows the rule of a−n=1an
14⋅1133
Remove the parentheses from the denominator.
14⋅1127
Simplify the multi-level fraction by multiplying by the reciprocal of the denominator.
14⋅27
Multiply 14 by 27 to get 274 .
274
Friday, December 9, 2016
Intermediate Algebra, Chapter 5, 5.1, Section 5.1, Problem 55
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