Download Radical equations

Solving Equations….radical and rational exponent forms
Recall:
m
x  x or
m
Radical equation
Ex.
x 2  7
 x
m
m
x
1. Isolate radical
2. Raise both sides to nth power
3. Solve for variable
4. Check answer
Ex. 3 x  9  15
2x  1  3
Ex.
Definition: Extraneous solution Ex. 4 x  1  2
Ex.
5
x  1  5 3x  8
Ex.
x  4  2x
Solve in Rational exponent form
1. Isolate power
2. Raise to nth power
3. solve for variable
4. Check
Ex.
1
2
x  10
2
5
Ex. (x  1)  16
Ex.
3
2
2x  1  249
Homework tonight:
Do p. 125: 1- 29 ALL
We will graph functions tomorrow so bring your
graphing calculator!