cguhsalgebra4 - Unit 2 Page 1

RATIONAL EXPONENTS

Taking the root of a number doesn't have to be written with the square root sign. They can be written using a fraction as an exponent. The numerator of the exponent gives the power of the number and the denominator tells what root is being taken.
Demonstrations at
Rational Expressions.ppt
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Rational expressions I.ppt
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Try the quiz at Rational Exponents

SOLVING RADICAL EQUATIONS

Isolate the radical portion of the equation (move any numbers not under the radical sign to the other side of the equal sign).
Square both sides of the equation. That gets rid of the square root sign and squares the other value.
Read the notes and try the problems at Solving Radicals

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COMBINING FUNCTIONS

Addition of functions can be written as f(x) + g(x) or (f + g)(x).
What this requires is addition of two mathematical sentences.
Example: f(x) = 3x + 2 and g(x) = 6x - 5 so f(x) + g(x) = (3x + 2) + (6x - 5) = 9x - 3
Try practicing at Combining Functions and Adding and Subtracting Functions

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