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Solve this pair of simultaneous equations (1) 5x+2y=20 and (2) x+4y=13

To solve these equations, our aim is to find a value of x and a value of y that satisfy both equations at the same time. By satisfy we mean, if we plug our values in for x and y then the left hand side and r...
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Answered by Jenny H. • Maths tutor
4906 Views

Solve the simultaneous equations 2x+2y=14 and 3x-y=1

To solve these eliminations, we must eliminate either the x's or the y's. Either is possible but let us start with the y's. There is 2y in the first equation and (-1)y in the second, so we will have to multi...
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Answered by Angus S. • Maths tutor
8092 Views

Solve x^2 + x -12= 0 for all values of x.

This is a quadratic equation so there are two main methods you can use to solve it- factorising and completing the square. My preferred method and the one I will demonstrate is factorisation . The above equa...
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Answered by Sam F. • Maths tutor
14415 Views

When do you use imparfait instead of passé composé to describe past events?

While the passé composé is used to refer to specific past events of interest, the imparfait can loosely be thought of as describing “background information” such as: - States of being and habitual actions: “...
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Answered by Alexander S. • French tutor
3628 Views

How should I structure paragraphs?

The best way to structure your paragraphs for essays is to use the PEEL method. This stands for Point, Evidence, Explanation and Link. By following this structure not only do you foreground your main point, ...
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Answered by Ella F. • History tutor
7241 Views