$\"\"$

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The equation is $\"\"$ .

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Squaring on both sides.

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$\"\"$

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Therefore $\"\"$ and $\"\"$ .

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$\"\"$

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Check each solution in the original equation.

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Check for $\"\"$ :

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$\"\"$

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Check for $\"\"$ :

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$\"\"$

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Check for $\"\"$ :

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$\"\"$

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Therefore the solutions are $\"\"$ and $\"\"$ .

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$\"\"$

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Graph the functions $\"\"$ and $\"\"$ on the same graph on the interval $\"\"$ .

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(1).Draw the coordinate plane.

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(2).Graph the functions $\"\"$ and $\"\"$ .

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Graph :

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$\"\"$

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Observe the graph :

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The graphs intersects at $\"\"$ and $\"\"$ .

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So the solutions are $\"\"$ and $\"\"$ .

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The solutions for the interval $\"\"$ are $\"\"$ and $\"\"$ .