Factorising quadratic expressions

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Factorising quadratic expressions www.mathssandpit.co.uk/blog

Factorise these quadratic expressions Hint - attention to detail is critical x2 + 6x + 5 2x2 - 9x - 5 x2 + 4x - 5 2x2 + 11x + 5 2x2 + 9x - 5 2x2 - 3x - 5 2x2 + 3x - 5 2x2 -11x + 5 2x2 - 7x + 5 2x2 + 7x + 5 x2 - 6x + 5 x2 - 4x - 5

Activity cards x2 + 6x + 5 2x2 - 9x - 5 2x2 -11x + 5 2x2 + 11x + 5 Cut out the cards and investigate the relationship between the factors x2 + 6x + 5 2x2 - 9x - 5 2x2 -11x + 5 2x2 + 11x + 5 2x2 - 3x - 5 2x2 + 3x - 5 2x2 + 7x + 5 2x2 - 7x + 5 2x2 + 9x - 5 x2 + 4x - 5 x2 - 4x - 5 x2 - 6x + 5 You may wish to print the slide 1 per page and cut out the cards

Hint cards Use these cards to help factorise the quadratic expressions These are the factors, which may help students who find this topic challenging

Attention to detail is essential for success Solution (x + 5) (x - 5) (2x + 5) (2x - 5) (x + 1) 2x2 - 3x - 5 x2 + 6x + 5 x2 - 4x - 5 2x2 + 7x + 5 (x - 1) x2 + 4x - 5 x2 - 6x + 5 2x2 + 3x - 5 2x2 - 7x + 5 Attention to detail is essential for success (2x + 1) 2x2 + 11x + 5 2x2 - 9x - 5 (2x - 1) 2x2 + 9x - 5 2x2 -11x + 5