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Calculate (i)(5.7xx10^(6))xx(4.2xx10^(...

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`(i)(5.7xx10^(6))xx(4.2xx10^(5))" "(ii)(5.7xx10^(6))xx(4.2xx10^(-3))" "(iii)(5.7xx10^(-4))xx(4.2xx10^(-2))`

Text Solution

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`(i)(5.7xx10^(6))xx(4.2xx10^(5))=(5.7xx4.2)(10^(6+5))=23.94xx10^(11)`
`(ii)(5.7xx10^(6))xx(4.2xx10^(-3))=(5.7xx4.2)xx(10^(6-3))=23.94xx10^(3)`
`(iii)(5.7xx10^(-4))xx(4.2xx10^(-2))=(5.7xx4.2)(10^(-4-2))=23.94xx10^(-6)`
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