Search over 10,000 free study notes

Remember completing the square gives a result of the form (x+q)² + p where q and p are numbers
Also q is always half of the x term, which in this case is -4, as such q = -2
Substituti...

2 5/3 = 11/32 8/9 = 24/9 = 8/311/3 + 8/3 = 19/3 = 6 1/3

1. rearrange the formula so that it is equal to zero by subtracting 3 from both sides of the equation.3x²+2x-6=02) To check if this formula can be factorised you can check if the value of b<...

Using one of the equations we express either x in the form of y, or y in the form of x. We then put this expression of x/y into the other equation. This allows us to calculate the numerical values of both...

AC and DB must be perpendicular therefore m₁m₂ = -1. (we can work out the gradient of DB)-4m₂ = -1 -----> m₂ = 1/4The equation of a line is y-y_...