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Solve your problem for the price of one coffee
Change 0.4 into a fraction.
Multiply by 1010 to remove the decimal.
a10⋅0.410
Multiply 10 by 0.4.
a410
Cancel the common factor of 4 and 10
Factor 2 out of 4.
a2(2)10
Cancel the common factors.
Factor 2 out of 10.
a2⋅22⋅5
Cancel the common factor.
Rewrite the expression.
a25
Apply the rule xmn=xmn to rewrite the exponentiation as a radical.
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