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Solve the Equation x(x23)=14x \left( x - \frac { 2 } { 3 } \right) = 14

Question 48

Multiple Choice

Solve the equation x(x23) =14x \left( x - \frac { 2 } { 3 } \right) = 14 by completing the square. Give the solutions in exact form and in decimal form rounded to two decimal places. (The solutions may be complex numbers.)


A) 13+12761.54;1312762.21- \frac { 1 } { 3 } + \frac { \sqrt { 127 } } { 6 } \approx 1.54 ; - \frac { 1 } { 3 } - \frac { \sqrt { 127 } } { 6 } \approx - 2.21
B) 23+12734.42;2312733.09\frac { 2 } { 3 } + \frac { \sqrt { 127 } } { 3 } \approx 4.42 ; \frac { 2 } { 3 } - \frac { \sqrt { 127 } } { 3 } \approx - 3.09
C) 13+12734.09;1312733.42\frac { 1 } { 3 } + \frac { \sqrt { 127 } } { 3 } \approx 4.09 ; \frac { 1 } { 3 } - \frac { \sqrt { 127 } } { 3 } \approx - 3.42
D) 23+12762.54;2312761.21\frac { 2 } { 3 } + \frac { \sqrt { 127 } } { 6 } \approx 2.54 ; \frac { 2 } { 3 } - \frac { \sqrt { 127 } } { 6 } \approx - 1.21
E) 13+12733.42;2312734.42- \frac { 1 } { 3 } + \frac { \sqrt { 127 } } { 3 } \approx 3.42 ; - \frac { 2 } { 3 } - \frac { \sqrt { 127 } } { 3 } \approx - 4.42

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