Negative ( <0: your roots are complex (recall sqrt (-1) i, with our imaginary unit i ). If the solutions are not real, state No real solution.įor the following exercises, solve the quadratic equation by the method of your choice. GCSE Maths - Solving Quadratics Using the Quadratic Formula 51 Cognito 420K subscribers Subscribe 1K 55K views 2 years ago GCSE Maths (9-1) This video covers how factorise quadratics using the. Make sure to check if the number under the root sign in your quadratic formula is: Positive ( >0 ): two distinct real roots, Equal to zero ( 0 ): single real numbered degenerate root (or, rather, two non-distinct roots). Quadratic equations can have two different solutions or roots. The quadratic equation in its standard form is ax2 + bx + c 0, where a and b are the. It is the solution to the general quadratic equation. ![]() \)įor the following exercises, solve the quadratic equation by factoring.įor the following exercises, solve the quadratic equation by using the square-root property.įor the following exercises, solve the quadratic equation by completing the square.įor the following exercises, solve the quadratic equation by using the quadratic formula. A quadratic equation is an algebraic equation of the second degree in x. The quadratic formula is a formula used to solve quadratic equations.
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