For a quadratic equation $ax^2 + bx + c = 0$, if the roots are $\alpha$ and $\beta$, then the sum of roots $\alpha + \beta = \frac{-b}{a}$ and the product of roots $\alpha\beta = \frac{c}{a}$. These relationships come from expanding $(x - \alpha)(x - \beta) = x^2 - (\alpha + \beta)x + \alpha\beta$ and comparing with the original equation.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Naomi Miselo – 31 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS