MATH101 Lecture Notes - Lecture 3: Quadratic Equation, Plane Curve
Document Summary
To solve a quadratic equation, you can use different methods such as factoring, completing the square, or using the quadratic formula. The quadratic formula is: x = (-b sqrt(b^2 - 4ac)) / 2a where a, b, and c are the coe cients of the quadratic equation ax^2 + bx + c = 0, and x is the variable. To use the quadratic formula, follow these steps: Step 1: identify the coe cients a, b, and c in the quadratic equation. Step 2: plug in the values of a, b, and c into the quadratic formula. Step 3: simplify the expression under the square root sign. Here are some examples of solving quadratic equations using the quadratic formula: Example 1: solve the quadratic equation x^2 - 3x + 2 = 0. Step 1: identify the coe cients a, b, and c. in this case, a = 1, b = -3, and c = 2.
