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(equation) Which of the following equations satisfies x=3-âˆ

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by Max@Math Revolution » Thu Sep 22, 2016 4:21 pm
(equation) Which of the following equations satisfies x=3-√3?
A. x2-6x+6=0
B. x2+6x+6=0
C. x2-6x+11=0
D. x2+6x-11=0
E. x2-6x-4=0
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by Max@Math Revolution » Sat Sep 24, 2016 9:20 pm
==> x-3=-√3, and if you square that on both sides, you get x2-6x+9=3, x2-6x+6=0, and the answer is A.
Answer: A

- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
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