150 likes | 178 Views
Algebra II. 6.1: Evaluate nth Roots and Use Rational Exponents. Simplify the expression. Simplify the expression. Simplify the expression. Simplify the expression. Finding real n th roots of a. If b n = a , then b is an n th root of a . Don’t forget about for even roots.
E N D
Algebra II 6.1: Evaluate nth Roots and Use Rational Exponents
Finding real nth roots of a. • If bn = a, then b is an nth root of a. • Don’t forget about for even roots. • 22 = 4 and (-2)2 = 4, therefore the 2nd root of 4 would be 2.
Examples: Find the indicated realnth root(s) of a without using a calculator. 1.) n = 3, a = -64 2.) n = 3, a = 216
Examples: Find the indicated realnth root(s) of a without using a calculator. 3.) n = 4, a = -16 4.) n = 4, a = 81
Examples: Find the indicated realnth root(s) of a without using a calculator. 5.) n = 5, a = 0 6.) n = 5, a = 243
Evaluate the expression using a calculator. Round to the nearest hundredth.