# SOLUTION: Find the value of "k" if f(x) = 3x2 + 6x + 1 is put into general form. a. -2 b. -1 c. 1 d. 3 e. 4

Algebra ->  Algebra  -> Real-numbers -> SOLUTION: Find the value of "k" if f(x) = 3x2 + 6x + 1 is put into general form. a. -2 b. -1 c. 1 d. 3 e. 4       Log On

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 Click here to see ALL problems on real-numbers Question 65995: Find the value of "k" if f(x) = 3x2 + 6x + 1 is put into general form. a. -2 b. -1 c. 1 d. 3 e. 4 Answer by uma(370)   (Show Source): You can put this solution on YOUR website!f(x) = 3x^2 + 6x + 1 Let y = 3x^2 + 6x + 1 = 3(x^2 + 2x) + 1 = 3(x^2 + 2x + 1 - 1) + 1 [completing the square] = 3(x^2 + 2x + 1) -3 + 1 = 3(x+1)^2 - 2 Comparing this with the standard form, y = a(x-h)^2 + k we get, k = -2 Good Luck!!!