Search over 10,000 free study notes

To solve these simultaneous equations, you must add/subtract both equatons from each other to eliminate one variable, allowing you to work out the value of the other.

As you can see from ...

Firstly, you can see from the equation that each bracket must contain an x since these multiply together to give the x^2. So you get (x..)(x..)

Next, to obtain the last number o...

1. First you need to learn how to recognise the form:

Difference of two square numbers.  a² - 36

(a² is a square number and 36 is also a ...

Finding Roots of Quadratic EquationsWhat is a root to an equation?A root to an equation is a set of value(s) that satisfy the equation and when shown graphically they are the x values at whi...

The total number of digits to the right of the point are known as 'decimal points' whereas significant figures start from the first non-zero number. Note: As si...