Search over 10,000 free study notes

(x+3)(x+2)=F=xx= x^2O=x2=2xI=3x=3xL= 3*2=6=x^2 + 2x + 3x + 6= x^2 + 5x + 6

3x+2y=8 (1)2x+5y=-2 (2)So you need to have a common multiple of either x or y in this example I’ll equate the x of both equations so I’ll multiply (1) by 2 and (2) by 3 2( 3x+2y=8). 6x+4y=16 (3).3(2x+5y=-...

The general format for an equation of this type is ax²+bx+c Firstly you should factor the equation. Since in the example given a=1 you know that there will be a single x term in each factor. So...

'Rationalise the denominator' means that we need to express the fraction in a way which does not have a surd on the bottom. A surd is a way of expressing an irrational number. For example √4 = 2 which is ...

There are three main ways to find the roots of a quadratic and they all have different benefits.Firstly, suppose your equation is in the form ax^2 + bx + c where a,b,c are all real numbers. Then you could...