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The 2 equations are: 1) x² + y² = 29 2) y-x=3 In this kind of simultaneous equation, you cannot take it away from each other. Instead, you need to substitue. To do so, rearrange the ...

To explain this question, I would first draw a digram of a circle. Then I woud add a chord and create triangles with vrtices at the circumference of the circle which all have the chord as a base. Next, I ...

x² +3x -4. (x + a) (x - b) x has no co-efficient so each is 1 x.  next find two numbers with a product of -4 and a sum of +3.  cannot be 2,2 as these numbers have a sum of -4, 0 or +...

As 3 ² is equivalent to (-3)² it follows that the square root of 9 must be + or -3.

The first step in answering any maths question is to identify key words or key information. Key information is area, length and width. We have been told that the total area is 56cm2. We know that area is ...