Solve the Equation $21 ( z - 9 ) - z ( z - 9 ) = 0$

question 200

Multiple Choice

Solve the equation. $21 ( z - 9 ) - z ( z - 9 ) = 0$

• A) \(\{ - 21 , - 9 \}\)
• B) \(\{ 21,9 \}\)
• C) \(\{ 21 , - 9 \}\)
• D) \(\{ 21 \}\)
• E) \(\{ - 21,9 \}\)

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