2/5 x 10 = 4
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1.86 times 10 to the 5th power = 186,000
The square root of x to the 10th power is x to the 10th power raised to the 1/2 power, which simplifies to x to the 10/2 power. This further simplifies to x to the 5th power. Therefore, the square root of x to the 10th power is x to the 5th power.
10 to the 5 th power
(100 - 100 / 100 - 100) = 2 => 102 - 102 / 10(10 - 10) =2 => (10 + 10) (10 - 10) / 10(10 - 10) = 2 [a2 - b2 = (a + b) (a - b)] Cancelling ( 10 - 10 ) {numerator} from ( 10 - 10 ) {denominator} => ( 10 + 10 ) / 10 = 2 => 20 / 10 = 2 => 2 = 2 [Hence, Proved]
7.1*10 to the 5th