Solve Quadratic Equations by Completing the Square
Determine the Constant $$x ^ { 2 } + \frac { 4 } { 5 } x$$

question 60

Multiple Choice

Solve Quadratic Equations by Completing the Square
Determine the constant that should be added to the binomial so that it becomes a perfect square trinomial. Then
write and factor the trinomial.
- $$x ^ { 2 } + \frac { 4 } { 5 } x$$

• A) \(\frac { 4 } { 25 } ; x ^ { 2 } + \frac { 4 } { 5 } x + \frac { 4 } { 25 } = \left( x + \frac { 2 } { 5 } \right) ^ { 2 }\)
• B) \(\frac { 8 } { 25 } ; x ^ { 2 } + \frac { 4 } { 5 } x + \frac { 8 } { 25 } = \left( x + \frac { 4 } { 5 } \right) ^ { 2 }\)
• C) \(\frac { 4 } { 5 } ; x ^ { 2 } + \frac { 4 } { 5 } x + \frac { 4 } { 5 } = \left( x + \frac { 2 } { 5 } \right) ^ { 2 }\)
• D) \(\frac { 2 } { 25 } ; x ^ { 2 } + \frac { 4 } { 5 } x + \frac { 2 } { 25 } = \left( x + \frac { 2 } { 5 } \right) ^ { 2 }\)

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