$\"\"$

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The standard form of the complex number is $\"\"$ , where a and b are real numbers.

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The expression is " $\"\"$ ".

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$\"\"$ (Apply the formula $\"\"$ )

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$\"\"$

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$\"\"$ (The imaginary unit $\"\"$ )

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ (Multiply the numerator and denominator by $\"\"$ )

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$\"\"$

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$\"\"$ (Apply the formula $\"\"$ )

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$\"\"$

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$\"\"$ (The imaginary unit $\"\"$ )

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$\"\"$

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$\"\"$

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$\"\"$ . $\"\"$

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The standard form is $\"\"$ .