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Factorise the following expression: x^2-1

(x+1)(x-1)
NT
Answered by Nelson T. • Maths tutor
3523 Views

Could you please go through an example question where you have to solve quadratic simultaneous equations?

Of course - let's solve this question: Question: Solve the following quadratic simultaneous equations (1) 2x + y = 4 - x (2) y 2 + 4x = 12 Answer: a) Let us start by re-arranging the first equation: 2x + y =...
AS
Answered by Akhil S. • Maths tutor
3465 Views

Solve the equation x ^2>=3(x + 6)

1. Begin by mulitplying out the bracket on the right hand side of the equation. x^2=3x+18 2. Now move all of the terms of the equation onto one side by subtracting them x^2-3x-18=0 3. The quadratic equation ...
BT
Answered by Brad T. • Maths tutor
11474 Views

Express 50p as a fraction of £4 and give your answer in its simplest form.

Firstly we know that £1 equals 100p. Then we could write 50p as £0.5 (As 50/100= 5/10= 1/2= 0.5), which is equivalent. Now we do the fraction, £0.5 over £4, which is 0.5/4, enlarge both of the numerator and ...
JH
Answered by Joy H. • Maths tutor
21787 Views

State the nth term of the following sequence: 3,7,11,15,19...

nth term= 4n-1
JJ
Answered by Jaredd J. • Maths tutor
7475 Views