7.6 Solving Radical Equations

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Presentation transcript:

7.6 Solving Radical Equations Obj: to solve equations involving radicals Do Now: what is the inverse operation for addition? subtraction? multiplication? division? a power of 2? a square root?

Ex 1: Solve. b) a) check your solutions!

Ex 2: a) b) check your solutions!!

Ex 3: HW: Factor this to solve! Bust da B is too long… let’s try a shortcut HW:

from Ex 3: continued… check your solutions!! Obj: to solve equations involving radicals Do Now: check the solutions from yesterday’s Ex 3 from Ex 3: check your solutions!!

So, why didn’t one of the solutions work? The solution that did not work is called an extraneous solution. An extraneous solution is a false solution. This is the reason why you MUST check all solutions!!

Ex 4: a) b) Don’t forget to check your solutions!!