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Disguised Quadratic Equations

Disguised Quadratic Equations

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Disguised Quadratic Equations

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  1. Disguised Quadratic Equations

  2. What is to be learned? • How to spot quadratic equations when they are disguised x2 - 3x + 4 = 0

  3. No x2 x (x + 5) = - 10 Quadratic? However, breaking brackets x2 + 5x = -10 Quadratic Equation Must make equal to zero x2 + 5x + 10 = Now factorise or Quadratic Formula O

  4. Disguised Quadratic Equations • Any equation with a squared term in it is a quadratic equation • You may need to break brackets first • Must get one side = • Then Factorise or zero use quadratic formula

  5. n(2 + 3n) = 12 break brackets 2n + 3n2 = 12 one side = zero 2n + 3n2 – 12 = Put in order 3n2 + 2n – 12 = 0 Quadratic Formula Job O