Matched Exercise 1: Find all real solutions to the equation.
x ^{4}  2 x ^{2}  3 = 0
The above equation has 4 solutions.
x1 = i
x2 = i
x3 = 3i
x4 = 3i
Matched Exercise 2. Find all real solutions to the equation.
x  3*sqrt(x)  4 = 0
The above equation has 1 solution.
x = 16
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