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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 ques...
JK
Answered by Jack K. • Maths tutor
3178 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 dividi...
CS
Answered by Claudia S. • Maths tutor
6376 Views

Expand these brackets 3x(x - 2)

3x(x-2)You do 3x times everything in the bracket so 3x * x = 3x 2 and 3x * -2 = -6x (negative * a postive = a negative)Then combine the two to give you 3x 2 - 6x
OF
Answered by Olivia F. • Maths tutor
8423 Views

Here are the first four terms of a quadratic sequence: 11 26 45 68. Work out an expression for the nth term.

Firstly we must count the values between each of the terms to find the first differences. (EG- 26-11=15, 1st differences: 15,19,23)Next we need to count the values between each of the first differences to fi...
DC
Answered by Daniel C. • Maths tutor
15288 Views

Solve the equation (3x**2 + 8x + 4) = 0

x = -2 x = -2/3
TP
Answered by Tamsin P. • Maths tutor
3815 Views