Top answers

Maths
GCSE

Solve the simultaneous equations: 5x + 3y = 9 and 7x - 2y = 25.

To solve these similar equations, we must either first eliminate x or y. There are multiple ways of doing this, one being rearranging one of the equations so that it is either "x=.." or "...

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Answered by Màiri G. Maths tutor
12119 Views

What is Pythagoras' theorem?

Pythagoras' Theorem is a rule for right-angled triangles which is used to solve problems.

Explanation:

For any right-angled triangle, the longest side (oppo...

SP
Answered by Sarah P. Maths tutor
6172 Views

How to apply the quadratic equation

First you determine which value is a, b, or c in the polynomial. Then you insert those values into the equation correctly.

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Answered by Ross N. Maths tutor
3932 Views

What is the method for factorising the expression 'x^2 + 3x + 2'?

  1. First look at the constant coefficient, which in this case is 2. You need two numbers which will multiply together to make this number. The only pairs of numbers that will make 2, are (1 and 2) or (...
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Answered by Will W. Maths tutor
4187 Views

Factorise 4xy-6xz

Method

First Look for a term (i.e x , y, z) which is in all the compoents

Also look if there is a possible common factor that the compoents share

CT
Answered by Cameron T. Maths tutor
9613 Views

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