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If you're asked to solve a quadratic equation, you could factorise it, or you could use the quadratic formula. The quickest way is to factorise, but sometimes the numbers are too tricky to factorise, (if an ...

The first thing we should note here is that we are looking for the area, so we need to recall the formula for the area of a right-angled triangle: Area = (base x height) / 2 Next we can input our values give...

This is an example of a linear equation. To find x we can apply the same operations to both sides in order to isolate x. First we can subtract 6 from both sides. This gives us 4x on the left and -3 on the ri...

To rearrange a formula, it is required that you group variables in certain ways, to leave you with the desired form. For example, Rearrange y=3x^2+3 to make x the subject. Firstly, we want to isolate the x, ...

The Pythagoras Theorem only works with right-angled triangles. If you see a triangle other than right-angled triangles, then you do not need to apply the Pythagoras Theorem. The right-angled triangle has thr...