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How do I divide fractions?

If you have a fraction divided by another fractions things can get tricky, but there is an easy way to avoid getting triple decker fractions! Have a look at this example: (1/2) / (2/5) = (1/2) x (5/2) = (5/4...
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Answered by Molly R. • Maths tutor
3595 Views

solve the following equation: 7x + 8 = 2(6x -2)

first of all it is best to get rid of the brackets. You do this by times each component in the bracet by the number on the outside in this case it is 2. 7x + 8 = 12x - 4 then you want to get all the x's on o...
KB
Answered by Kay B. • Maths tutor
3631 Views

Let f(x) = 2x^3 + x^2 - 5x + c. Given that f(1) = 0 find the values of c.

In order to solve this question we simply must substitute x=1 into f(x). But what is f(x)? What does it actually mean to make a subsitution? f(x) has a fancy name attached to it called a function . It is ess...
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Answered by Michael L. • Maths tutor
10773 Views

Solve the simultaneous equations: ...

Two methods for simultaneous equations: making them equal to each or substitution. If they both have a common term, for example "y", then you can do substitution, otheriwise find a way to make them...
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Answered by Divya V. • Maths tutor
3776 Views

Find the tangent and normal to the curve y=(4-x)(x+2) at the point (2, 8)

-Tangent is a straight line that touches, but does not intersect, the curve at the point (2,8). We need to find the gradient of the curve at the point (2, 8). To do this, expand the equation, differentiate i...
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Answered by Sam E. • Maths tutor
5326 Views