Solve 12k^2-4 - ScanMath

Evaluate

12 k^{2} - 4

To find the roots of the expression,set the expression equal to 0

12 k^{2} - 4 = 0

Move the constant to the right-hand side and change its sign

12 k^{2} = 0 + 4

Removing 0 doesn't change the value,so remove it from the expression

12 k^{2} = 4

Divide both sides

\frac{12 k ^{2}}{12} = \frac{4}{12}

Divide the numbers

k^{2} = \frac{4}{12}

Cancel out the common factor 4

k^{2} = \frac{1}{3}

Take the root of both sides of the equation and remember to use both positive and negative roots

k = \pm \frac{1}{3}

Simplify the expression

More Steps

k = \pm \frac{3}{3}

Separate the equation into 2 possible cases

k = \frac{3}{3} k = - \frac{3}{3}

Solution

k_{1} = - \frac{3}{3}, k_{2} = \frac{3}{3}

Alternative Form

k_{1} \approx - 0.57735, k_{2} \approx 0.57735

Factor the expression