Maths

Maths

1. Quadratic Equations

   • Steps
     • Make one side = 0
       • Factorise
         • Solve for x
   • k-method
     • Use if you have expressions which are repeated
   • Surd equations
     • Isolate surd
       • Square both sides
         • Solve for x
   • Exponential equatiosn
     • Get same bases
   • Completing the square
     • Take out co-effient of x^2
       • Add and subtract half of coeffient of x^2
         • Factorise prefect square
           • Distribute coeffient back in
     • On a quadratic
       • = sign
         • Move constant to RHS
           • Divide by coeffient of x^2
             • Add half of coeffient x^2 to both sides
               • Solve for x
       • Finds maximum/minimum