45 . Raising Powers to Powers
To raise a power to a power, multiply the exponents:
(x^3 )^4 = x3×4 = x^1246 . Simplifying Square Roots
To simplify a square root, factor out the perfect squares under the radical,
unsquare them, and put the result in front.
47 . Adding and Subtracting Roots
You can add or subtract radical expressions when the part under the
radicals is the same:
Don’t try to add or subtract when the radical parts are different. There’s not
much you can do with an expression like:
48 . Multiplying and Dividing Roots
The product of square roots is equal to the square root of the product:
The quotient of square roots is equal to the square root of the quotient: