Solving Quadratics By Factorising | Algebra | Maths | FuseSchool

FuseSchool - Global Education · YouTube

Key points

By the end of the lesson the learner can expand and factorise simple quadratic expressions.
By the end of the lesson the learner can solve quadratic equations by factorisation.
By the end of the lesson the learner can recognise quadratic patterns in real situations.

Audio narration — reads aloud, works offline

Transcript

[0:00] A quadratic expression contains a term in x squared, the highest power being two. [0:45] To expand two brackets we multiply each term in the first by each term in the second. [1:30] To factorise, we look for two numbers that multiply to the constant and add to the middle coefficient. [2:15] A quadratic equation equals zero, and we solve it by setting each factor equal to zero. [3:00] Each factor gives a solution, so a quadratic usually has two answers called roots.

Plays from this package with no internet. Subtitles are on; the 🔊 Listen button also reads the lesson aloud.