Note:
In example (g), the presenter factorised the quadratic expression by grouping which may seems unfamiliar to you. Please ignore this method and go ahead to factorise the expression by "cross-method" or "reverse FOIL method" that you have learnt in class.
You could also simplify the equation by dividing by 2 throughout to give 3x^2 - x - 10 = 0 which is easier to factorise.
No comments:
Post a Comment