How to Factorise Monic Quadratics Using the Cross Method
How to factorise quadratics where a = 1 using the cross method: find the two numbers, split the middle term and group, then use the shortcut.
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Free maths video lessons for high school students. Each one works through a method step by step with worked examples, from factorising to solving linear and simultaneous equations.
How to factorise quadratics where a = 1 using the cross method: find the two numbers, split the middle term and group, then use the shortcut.
How to factorise four terms by grouping: take out the HCF first, pair the terms, take out the common bracket and deal with a minus sign between pairs.
How to find the HCF of numbers and algebraic terms, then use it to factorise expressions, including ones with a negative first term or fractions.
How to solve linear equations with fractions, with reverse BODMAS, clearing the denominator first, common denominators and x on both sides.
How to choose between substitution and elimination for simultaneous equations, with eight worked examples and two word problems.
How to solve linear equations with x on both sides, brackets, fractions and literal equations, with worked examples from a Year 11 Methods lesson.