Solve
- $9 \sqrt { \mathrm { x } ^ { 2 } - 80 \mathrm { x } } = \mathrm { x } ^ { 2 } - 80 \mathrm { x }$

question 50

Multiple Choice

Solve.
- $9 \sqrt { \mathrm { x } ^ { 2 } - 80 \mathrm { x } } = \mathrm { x } ^ { 2 } - 80 \mathrm { x }$

• A) \(0,80 , \frac { 81 } { 80 }\)
• B) \(0,80,81 , - 1\)
• C) \(\varnothing\)
• D) \(0,80 , - \frac { 81 } { 80 }\)

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Necessary Condition

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