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Simplify. Write in scientific notation:(4*10 to the 5th power)to the 2 power.

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4000 * 10^2 is the same as 4 * 10^5, but the problem is that 4000 * 10^ 2 is no longer in scientific notation.  A number is only in scientific notation if the decimal to the number is behind the first digit of the number. 

4 * 10^5 written in standard form is 400,000, so then 4000 * 10^2 written in standard form is...

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