To make a Quadratic Equation, you let the Expression equal zero. Solving Quadratic Equations Remember Factorising Quadratic Expressions? + Guide number 6 1x6 2x3 Add to 7 No Good Add to 5 Yes! Perfect Factorised To make a Quadratic Equation, you let the Expression equal zero. TRY it YOURSELF. START with

Get all the terms to the LHS of the equals, with zero on the RHS Solving Quadratic Equations Remember this from Solving Linear Equations LINEAR equations have only ONE solution for x Try to get the x-term on its own, on one side of the equals QUADRATIC equations have TWO solutions for x Get all the terms to the LHS of the equals, with zero on the RHS Solutions must balance the equation

Solving Quadratic Equations Show how the solutions BALANCE the equation The two solutions here are x=2 and x=3. Let’s do a check. Correct! Correct!

Solving Quadratic Equations x squared, x’s, number equals zero + Can we FACTORISE ? Guide number 6 1x6 2x3 Add to 7 No Good Add to 5 Yes! Perfect Factorised (as shown earlier) Solved Remember Our Golden Rule Get all the terms to the LHS of the equals, with zero on the RHS

GOLDEN RULE Get all the terms to the LHS of the equals, with zero on the RHS or Get the equation in the form x squared, x’s, number equals zero