# Algebra

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Expression, equation, identity and formula Simplifying expressions Change the subject of a formula (Part 1)  Substitute numbers into formula Substitute numbers into expressions Factorising expressions Expanding single brackets Re-arranging & solving simple one step equations Double function machines Forming expressions, equations or formula Function machines Solve inequalities with one or two variables Solving quadratic equations by factorising (Part 1) Trial and improvement to find approximate solutions of equations Change the subject of a formula (Part 2) - with powers Find the gradient of a straight line graph from 2 points Find the mid-point of a line Find the length of a line (using Pythagoras) Solve equations that include brackets Solve equations that include powers Solving fractional equations (Part 1) - Linear Solve equations with unknown on both sides including negative numbers Solve two step equations with unknown on one side and involving fractions Use elimination to solve simultaneous equations Use substitution to solve simultaneous equations Using number sequences & describe a rule of a sequence Find & use the nth term expression for a sequence Using the nth term expression of a quadratic sequence An equation of a line - gradient, Y-intercept and y=mx+c Expanding double brackets  Drawing straight line graphs Drawing straight line graphs to solve linear simultaneous equations on graphs Inequalities on a number Llne Factorising quadratics into 2 brackets with coefficients of x² greater than 1  Solving quadratic equations by factorising (Part 2) - with coefficients > 1 Solving quadratic equations by using the formula  Parallel and perpendicular lines Change the subject of a formula (Part 3) - by factorising Factorising using the difference of two squares Find the equation of a straight line from gradient and co-ordinates Geometric sequence (Common ratio) Solving quadratic equations by completing the square Completing the square of quadratic expressions (Part 1) Completing the square of quadratic expressions (Part 2) - with higher coeffcients of x² Working with algebraic fractions (Part 1 - adding and subtracting) Working with algebraic fractions (Part 2 - simplifying by factorising) Working with algebraic fractions (Part 3 - multiplying and dividing) Find the nth term expression for a quadratic sequence Circle equations in the form x² + y² = r² Equation of a tangent to a circle Iteration  Turning points Triple brackets Solving fractional equations (Part 2 - Quadratics)        