Mathsercise-C Ready? Quadratics Here we go!

Find the common factors in all the terms Factorise………. a) x2 + 2x x (x + 2) Question 2 b) y2 – 6y y (y – 6) c) 8x2 – 20xy 4x (2x – 5y) Answer 1 Quadratics

Remember to multiply out both terms! Expand these brackets………. a) 7(x + 3) 7x + 21 Question 3 b) x(x + 3) x2 + 3x Answer c) 2y(3y – 5) 6y2 – 10y Remember to multiply out both terms! 2 Quadratics

You should get 4 terms when you multiply out the brackets! Expand these brackets………. a) (x + 1)(x + 3) x2 + 3x + 1x + 3 Question 4 x2 + 4x + 3 b) (x – 6)(x + 2) x2 + 2x - 6x - 12 You should get 4 terms when you multiply out the brackets! x2 - 4x - 12 Answer c) (x – 4)(x + 7) x2 + 7x - 4x - 28 x2 + 3x - 28 3 Quadratics

This means separate into two brackets! Factorise………. a) x2 + 3x + 2 (x + 1)(x + 2) b) x2 + 7x + 12 (x + 3)(x + 4) c) x2 + 2x - 15 (x + 3)(x - 5) d) x2 - 2x - 35 (x + 5)(x - 7) The number values in each set of brackets must multiply together to make the 3rd term in the quadratic, and must add together to make the number of x’s in the 2nd term! Start Answer 4 Quadratics