Determine rational exponents, Mathematics

Assignment Help:

Evaluate following.

(a) 625^3/4

Solution

(a) 625^3/4

Again, let's employ both forms to calculate this one.

625^3/4 =( 625^1/4 )³ =(5)³ = 125 625^1/4= 5 because 5⁴ = 625

625^3/4= (625³ )^1/4 = ( 244140625)^1/4 = 125 because 125⁴ = 244140625

As this part has illustrated the second form can be quite hard to employ in computations. The root in this case was not an apparent root and not specifically easy to get if you didn't know it right off the top of your head.

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