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Simplify the expression. Write the answer using scientific notation. (9*10^7)(7*10^9)
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Simplify the expression. Write the answer using scientific notation. (9*10^7)(7*10^9)

User Hannelore
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first one: 9 x 10^8th i thinkor just 90 million

second one: 7 billion. 7 x 10^9

User Paul Evans
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