Two cases in which this can typically happen (there are others as well) are:
1. The equation includes a square. Example: x2 = 25; the solutions are 5 and -5.
2. The equation includes an absolute value. Example: |x| = 10; the solutions are 10 and -10.
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There are two distinct real solutions.
They each typically have two solutions, a positive one and a negative one.
Two distinct real solutions.
Normally it has two solutions but sometimes the solutions can be the same.
It will then have two equal real solutions