For individual or collaborative investigation
In this section we introduced methods of solving equations quadratic in form by substitution and solving equations involving radicals by raising both sides of the equation to a power. Suppose we wish to solve
We can solve this equation using either of the two methods. Work Exercise in order to see how both methods apply.
Exercise
Let u = and solve the equation by substitution. What is the value of u that does not lead to a solution of the equation?
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