Question: Solve the given problems. All numbers are accurate to at least two significant digits. Solve 6x 2 x = 15 for x by (a)

Solve the given problems. All numbers are accurate to at least two significant digits.

Solve 6x2 − x = 15 for x by 

(a) Factoring, 

(b) Completing the square,

(c) The quadratic formula. Which is 

(i) Longest?

(ii) Shortest?

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