What are the solutions to the equation completesquare 3x^2+4x-1 ?

The solutions to the equation completesquare 3x^2+4x-1 are 3(x+2/3)^2-7/3

Find the zeros of completesquare 3x^2+4x-1

The zeros of completesquare 3x^2+4x-1 are 3(x+2/3)^2-7/3

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complete the square

3 x^{2} + 4 x - 1

3 (x + \frac{2}{3})^{2} - \frac{7}{3}

Solution steps

3 x^{2} + 4 x - 1

Write

3 x^{2} + 4 x - 1

in the form:

x^{2} + 2 a x + a^{2}

Factor out

3

3 (x^{2} + \frac{4 x}{3} - \frac{1}{3})

2 a = \frac{4}{3} : a = \frac{2}{3}

Add and subtract

(\frac{2}{3})^{2}

3 (x^{2} + \frac{4 x}{3} - \frac{1}{3} + (\frac{2}{3})^{2} - (\frac{2}{3})^{2})

x^{2} + 2 a x + a^{2} = (x + a)^{2}

x^{2} + \frac{4}{3} x + (\frac{2}{3})^{2} = (x + \frac{2}{3})^{2}

3 ((x + \frac{2}{3})^{2} - \frac{1}{3} - (\frac{2}{3})^{2})

Simplify

3 (x + \frac{2}{3})^{2} - \frac{7}{3}

x^{2} - 100 x - 300 = 0

x = x^{2} + 3 x

t^{2} - 4 = 12

x, 12 x^{2} - 120 x + 209 = 0

3 x^{2} - 6 x + 1 = 0

What are the solutions to the equation completesquare 3x^2+4x-1 ?
The solutions to the equation completesquare 3x^2+4x-1 are 3(x+2/3)^2-7/3
Find the zeros of completesquare 3x^2+4x-1
The zeros of completesquare 3x^2+4x-1 are 3(x+2/3)^2-7/3