book Maths Puzzle Numerical Ability

How do you multiply to find the number in standard form of an exponent?

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book Other Question

Simplify 2 * 4th sqrt32( 4th Sqrt8 + 3rd sqrt128) Kyle left Miami and drove at a speed of 46 mph. Eric left 1 hour and 45 minutes later and drove at a speed of 62 mph. How long will it take Eric to catch up with Kyle?