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When solving a simultaneous equation, we will use the elimination method. This method sees us removing or ‘eliminating’ the x or y term. First we need to find the lowest common multiple of the x and y ter...

First we need to rearrange our equation so it is in the correct form of ax²+bx+c=0.So we'd move the 3 over to the left hand side to give us 2x2-2x-3=0.We need to use the quadratic formula. Usin...

1. First step is to rearrange to make the quadratic easier to work with: in a familiar form. x² + 4x ≥ 77, -77 from both sides x² + 4x - 77 ≥ 0 Now the quadratic can be solved, ...

We can talk about any integer (or whole number) with the variable n. n could be any integer, 2, 3 or 100 or 5 billion and 1!If n is any integer, then what numbers could be written as 2n? These are the eve...

In order to solve this we need to make two of the terms the same and use an elimination method so we are left with only one unknown rather than two. We will multiply x + 2y = -6 by 2 in order to get 2x + ...