Solve x^2+2x-4, leaving your answer in the simplist surd form. (4marks)

1. Simplist surd form means use Quadratic equation

2. Write out Quadratic equation

3. Write out value of a, b and c

4. Fit these values into equation

Now the maths starts. Area's where students are likely to make mistakes are with use of signs (+ or -) and with simplifying surd.