Problem

find the zeros
\[
3 x^{2}-2 x-8=0
\]

Answer

Expert–verified
Hide Steps
Answer

\boxed{x_1 = 2.0, x_2 = -\frac{4}{3}}

Steps

Step 1 :Given the quadratic equation \(3x^2 - 2x - 8 = 0\), we can find the zeros using the quadratic formula: \[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]

Step 2 :Substitute the coefficients a = 3, b = -2, and c = -8 into the formula: \[x = \frac{2 \pm \sqrt{(-2)^2 - 4(3)(-8)}}{2(3)}\]

Step 3 :Calculate the discriminant and simplify the expression: \[x = \frac{2 \pm \sqrt{100}}{6}\]

Step 4 :Find the two zeros: \[x_1 = \frac{2 + 10}{6} = 2.0\] and \[x_2 = \frac{2 - 10}{6} = -\frac{4}{3}\]

Step 5 :\boxed{x_1 = 2.0, x_2 = -\frac{4}{3}}

link_gpt