Solving Radical Equations

1
Solving Radical Equations
12.3
Solve equations involving radicals
Goal 1
Use radical equations to solve real-life problems
Goal 2
2
Example 1
Solve the equations. Check for extraneous
solutions.
3
Example 2
Solve the equations. Check for extraneous
solutions.
4
Example 3
Solve the equations. Check for extraneous
solutions.
5
Example 4
Two numbers and their geometric mean are given.
Find the value of a.
8 and a 12
7 and a 14
5 and a 15
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Example 5
The radius r, the height h, and the surface
area A of a cylinder are related by the
equation What is the radius of a rod whose
surface area is 50p square inches and height is
24 inches?
24 in
r
Homework
p. 725 22-42