How To Solve A Quadratic Equation
| Education : Maths This may sound like a daunting step, but to solve a quadratic first you use steps you know: factorise it first. Here's an example to work through: Imagine you are asked to solve this equation: x^2 - 4x - 12 = 0 First, we factorise the equation, using the technique we saw above, to get: (x - 6) (x + 2) = 0 So, since when multiplied together the answer is 0, we know that: either (x- 6) = 0 OR (x + 2) = 0 So, either x = 6 OR x = -2 Easy!
 Questions about gcse maths:
|
|
