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Solve x^2 + 4x + 4 = 0

To solve this equation we have two different methods: 1) We can solve this method 'by hand' and is done by knowing how to factorise the quadratic and is done by looking at the equation given to us to find hi...
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Answered by King Him C. • Maths tutor
4994 Views

Make x the subject of the equation y=(2(1+x))/(3x-1)

This might be hard at first, but if you work through step by step you'll get there! Start by getting rid of the fraction, multiply both sides by (3x-1) to get y(3x-1) = 2(1+x) Multiply out the brackets: 3yx-...
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Answered by Abigail C. • Maths tutor
5782 Views

Solve 5x + 4 = 14 + x

This question is about rearranging the equation so that we have all the unknown values on one side, and all the known values on the other side.To start, we want to put all the x values on one side, and all t...
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Answered by Venetia L. • Maths tutor
20653 Views

Simplify (3x^2-x-2)/(x^2-1)

This is an algebraic fraction. There is more than one way of solving this expression, but the simplest is to factorise both the top and the bottom quadratic expressions.Firstly we shall simplify the top expr...
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Answered by Venetia L. • Maths tutor
17935 Views

How do I derive the indefinite integral of sine?

The integral of sine is pretty easy to remember as it is -cos + C. However you need to be able to prove this, without using the integral of cosine. This method uses sines exponential form. As e iθ​ = cosθ + ...
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Answered by Lucile C. • Maths tutor
3113 Views