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Write 2x^(2) + 9x + 1 in the from a(x+m)^(2) + n, and hence solve 2x^(2) + 9x + 1= 0, leaving your answer in surd form.

So the first part of the question is about completing the square. Since the coefficient of .. is greater than one, the first step in carrying out this process is to take out the ‘2’ from the equation. Thi...

Answered by Isobel S. • Maths tutor

3814 Views

Expand (2x+3)(x-2)

There are many ways to answer this question but I will use the 'foil' method, where foil is an acronym for ensuring we don't forget any terms. F is for first, where we multiply the first terms in each bra...

Answered by • Maths tutor

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Quadratic Equations and factorising

These questions from my own experience were some of the hardest in the GCSE maths course and need careful explaining in order to understand them properly and be able to complete them independently.These q...

Answered by Jack K. • Maths tutor

2359 Views

How do you convert fractions to decimals? For example. Convert 13/20 to a decimal.

One way to convert fractions to a decimal is to divide the top number by the bottom. However with fractions like this, it is not easy to do without a calculator. So, you must use another method. Since div...

Answered by Claudia S. • Maths tutor

3958 Views

Expand these brackets 3x(x - 2)

3x(x-2)You do 3x times everything in the bracket so 3x * x = 3x² and 3x * -2 = -6x (negative * a postive = a negative)Then combine the two to give you 3x² - 6x

Answered by Olivia F. • Maths tutor

5525 Views