It depends what power is associated with the radical.
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A calculator would not do you much good here anyway.sqrt(120)simple factoring under the radicalsqrt(22 * 30)can bring the 2 out as it is squared2sqrt(30)========simplified
The question is based on the premise that It is not possible to simplify a radical without first factorising it. That is simply not true. Beginners may find it a useful step but that does not make it "important to always factor".Simplifying radicals entails removing square factors of the radicand from under the radical. This can be done without factoring first.
-5/4 can be entered into your computer's calculator. If doing this without a calculator, remember that a negative divided by a positive will always be negative, and recognize that because 4 does not go into -5 easily, it will come out as either a decimal or a fraction. The short version: -5/4 = a negative fraction or decimal Solve it with this knowledge.
How can you calculate the square root of 1.8E-5 without a calculator?
0.75 = 3/4. You don't need a calculator for that!