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Solve the Equation 4x2+21=20x4 x ^ { 2 } + 21 = 20 x

Question 151

Multiple Choice

Solve the equation.
- 4x2+21=20x4 x ^ { 2 } + 21 = 20 x


A) 72,32- \frac { 7 } { 2 } , - \frac { 3 } { 2 }
B) 72,32\frac { 7 } { 2 } , \frac { 3 } { 2 }
C) 34,92\frac { 3 } { 4 } , \frac { 9 } { 2 }
D) 74,34\frac { 7 } { 4 } , \frac { 3 } { 4 }

Correct Answer:

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