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Using Square Roots

Number of Solutions

Example 1

Solve the equation UsingSqRt1-1 using square roots.
Step 1. Isolate the x2 -term.

UsingSqRt1-2

Step 2. Take the square root of both sides.

UsingSqRt1-3

*Note:x = 5 or -5 are the two solutions to the equation. They are also the x -intercepts of the graph.