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Maths
GCSE

When should I use the quadratic formula?

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, (...

Answered by Sarah M. Maths tutor
2773 Views

A right-angled triangle has base 10cm and height 4cm. What is the area of the triangle?

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

Answered by Kirsty S. Maths tutor
11277 Views

Solve 4x + 6 = 3

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 le...

Answered by Tom B. Maths tutor
4333 Views

Rearranging Formulae

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...

Answered by Alex H. Maths tutor
4615 Views

How does Pythagoras Theorem work?

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 h...

Answered by Kamran H. Maths tutor
7112 Views

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