110 likes | 124 Views
Learn to write expressions with rational exponents in radical form, and simplify expressions in exponential or radical form. Understand the rules for rational exponents and practice simplifying techniques. Examples provided.
E N D
5.7 Rational Exponents Objectives: Write expressions with rational exponents in radical form, and vice-versa. Simplify expressions in exponential or radical form.
Rational Exponents For any real number b and for any positive integer n, except when b<0 and n is even. (Any number raised to the ½ power is the same as the square root of the number etc.) Examples:
Rational Exponents For any nonzero real number b and any integers m and n, with n>1, except when b<0 and n is even. Examples:
Simplifying Rational Exponents To be considered simplified, the expression must meet the following conditions: • No negative exponents. • No fractional exponents in the denominator. • Not a complex fraction. • The index of any remaining radical is the least number possible.
Write in radical form. Write using rational exponents. Examples:
Writing Answers Should your answer be written with a rational exponent or as a radical? It depends on how the problem was written. If it starts out as a rational exponent, the answer should also be a rational exponent. If it starts out as a radical, the answer should be expressed as a radical.
Simplify Examples
Simplify More Examples
Example Simplify
Rationalizing with Binomials Rationalize:
Homework Page 261 22-60 even