$\"\"$

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Find the value of $\"\"$ .

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Check the solution when differente values of $\"\"$ .

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a.

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The equation is $\"\"$ .

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Case(i):

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Let $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Distributive property: $\"\"$ )

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$\"\"$ (Substitute $\"\"$ in the equation)

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$\"\"$ (Multiply)

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Therefore, the value of $\"\"$ does not satisfy the equation.

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Case(ii):

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Let $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Distributive property: $\"\"$ )

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$\"\"$ (Substitute $\"\"$ in the equation)

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$\"\"$ (Multiply)

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$\"\"$

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Therefore, the value of $\"\"$ has satisfied the equation.

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The equation is an identitical when $\"\"$ .

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$\"\"$

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b.

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The equation is $\"\"$ .

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Case(i):

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Let $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Distributive property: $\"\"$ )

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$\"\"$ (Substitute $\"\"$ in the equation)

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$\"\"$ (Multiply)

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$\"\"$ (Cancel common terms)

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Therefore, the value of $\"\"$ does not satisfied the equation.

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Case(ii):

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Let $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Distributive property: $\"\"$ )

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$\"\"$ (Substitute $\"\"$ in the equation)

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$\"\"$ (Multiply)

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$\"\"$ (Cancel common terms)

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Therefore, the value of $\"\"$ is satisfied the equation.

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The equation is an identitcal when $\"\"$ . $\"\"$

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a. The equation is an identitical when $\"\"$ .

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b. The equation is an identitcal when $\"\"$ .