\"\"\"\"\"\"

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The expression is \"\". \ \

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According to subtraction property of equality: if \"\", then \"\".

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\"\"       (Subtract 30 from each side)

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\"\"         (Additive identity property: \"\")

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\"\"                           (Additive inverse property: \"\")

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\"\"

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According to Multiplication property of equality: if \"\", then \"\".

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\"\"                  (Multiply each side by 3)

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\"\"                         (Cancel common terms)

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\"\"                              (Multiply: \"\")

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According to division property of equality: if \"\", then \"\".

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\"\"                         (Divide each side by 2)

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\"\"                              (Cancel common terms)

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\"\"                                 (Divide: \"\")

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\"\"                      (Take square roots of each side)

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\"\"

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\"\"

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\"\"

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Product property of square roots:

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For nonnegative real numbers a and b, \"\"

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\"\"

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\"\"

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Rewrite the (-1) using imaginary unit; that is \"\" where i2 = -1.

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\"\" \ \

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   \"\"          (Find the square root: \"\")

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   \"\"            (Simplify)\"\"

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The value of x\"\".