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Maths
GCSE

factorise the equation x^2+17x+70

Firstly, you can see from the equation that each bracket must contain an x since these multiply together to give the x2. So you get (x..)(x..)

Next, to obtain the last number o...

Answered by Tanush M. Maths tutor
4472 Views

How do you factorise and know if it is a difference of two squares ?

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 ...

Answered by Esther L. Maths tutor
4127 Views

Finding Roots of Quadratic Equations

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...

Answered by Alexander G. Maths tutor
20560 Views

What are the differences between decimal points and significant figures?

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...

Answered by Niall L. Maths tutor
69397 Views

How do I find the length of a side of a triangle using the cosine rule?

Suppose we have a triangle with 2 sides of length 4 and 5 (in any units), and the angle between those sides is 60 degrees. We want to find the length of the side opposite the 60 degree angle.

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Answered by Angus H. Maths tutor
4598 Views

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