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objective: Solve absolute value equations and identify extraneous solutions

Special solutions

no solution

Infinitely many solutions

a true statement: A false statement:

when variables "cancel out" during the solving process, the equation has a special solution.

recall

a. infinitely many solutions b. no solution c. at least one solution

|4x-8| = -8

zoom poll

a. infinitely many solutions b. no solution c. at least one solution

|4x-8|-10 = -8

zoom poll

|2x+12|=4x

an extraneous solution is solution that seems to be correct, until checking it in the original equation...then you find that it doesn't work!

extraneous solution

a. |x|-4=3 b. |x|+5=3 c. |x+5|=4

which of these equations has no solution?

zoom poll

objective: Solve absolute value equations and identify extraneous solutions

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