Evaluate $\sqrt { b ^ { 2 } - 4 a c }$

question 86

Multiple Choice

Evaluate $\sqrt { b ^ { 2 } - 4 a c }$ for the given values of a, b, and c, and simplify.
- $a = 4 , b = - 2$ , and $c = 7$

• A) \(3 \mathrm { i } \sqrt { 6 }\)
• B) \(6 \mathrm { i } \sqrt { 3 }\)
• C) \(6 \sqrt { 3 }\)
• D) \(- 6 \sqrt { 3 }\)

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