Solve the equation

Oefeningsafbeelding

Amanita, let's focus on the equation inside the green rectangle:

3x210x+8=03x^2 - 10x + 8 = 0

Here’s the step-by-step plan to solve this quadratic equation:

Step 1: Identify the type of equation.
This is a quadratic equation because the highest power of xx is 2.

Step 2: Recall the quadratic formula.
The quadratic formula for solving ax2+bx+c=0ax^2 + bx + c = 0 is:

x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

where a=3a = 3, b=10b = -10, and c=8c = 8.

Step 3: Substitute the values of aa, bb, and cc into the formula and solve for xx.

Let’s solve the equation now. Amanita, after solving the equation 3x210x+8=03x^2 - 10x + 8 = 0, we find the solutions:

x=2andx=43x = 2 \quad \text{and} \quad x = \frac{4}{3}

This means that if you substitute either x=2x = 2 or x=43x = \frac{4}{3} back into the original equation, it will make the equation true. These are the values of xx that solve the quadratic equation.