Level 405 Level 407
Level 406

Solve Radical Equations


13 words 0 ignored

Ready to learn       Ready to review

Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

All None

Ignore?
How do you take away the √ ?
You put it to the ² power
Use GEMDAS Backwards
What do you use to solve for x
what is an extraneous solution?
An apparent solution that must be rejected because it does not satisfy the original equation.
2+ square root r = 11
minus 2 on both sides= (square root r) ∧2= (9)∧2 r=81
Solve 2 + √r = 11
2 - 2 + √r = 11 - 2
Solve ³√x - 10 = -3
³√x - 10 + 10 = -3 + 10
((x - 2)∧¾)∧4/3 = 1∧4/3
Solve (x - 2)∧¾ = 1
x=4
x∧2/3 +4=12
(x+9)∧2/3=49
First: Subtract 9 from both sides
81=x²+17
First: Subtract 17 from both sides
Why do you ALWAYS check your answer?
To see if it is an extraneous solution, one that does not satisfy the original equation
Square it
How do you get rid of the square root?
Yes
Can some extraneous solutions sometimes satisfy an equation?