Post on 18-Jan-2018
description
7.5
Solving square root and other radical equations
Solving square root equations
• Get the square root by itself before you do anything else.
• Square both sides and then solve
Solve
7952 x
Solve
369423 x
Solve
133144 x
Practice Problems
2/6: #7 pg 394 1-6, do 65-74 as review
7.5 Day 2
Solving radical equations
• Get the radical by itself• Raise each side to the reciprocal power• Remember rules for absolute values
evenismwhenxx mn
nm
)(
Solve
252 32x
Solve
54)3(2 23
x
Practice Problems
2/7: #8 pg 394 7-12
7.5 Day 3
• Extraneous solutions• Solving when we have multiple roots
Solve
xx 47
Solve
51 xx
Solving equations with 2 roots/rational exponents
• Get one on each side of the equation• Determine which power to take each side
too• Simplify and check your solutions
Solve021694 xx
Solve0)43()12( 25.5. xx
Practice Problems
2/6: #9 pg 394 15-29 odd, 34-42 even