Top answers

Maths
GCSE

How to factorise quadratic equations?

There are different ways of factoring an equation depending on the type. A few are highlighted here: 
1) Taking out a common factor 
General formula: ab + ac = ...

LB
Answered by Lydia B. Maths tutor
6112 Views

Solve the equation:

5x-3=72x+1

log55x-3=log572x+1

x-3=(2x+1)log57

x-2xlog57=3+log57

x(1-2...

NH
Answered by Nina H. Maths tutor
4830 Views

How to find conditional probability

Take this problem as an example: 

5 white socks and 3 black socks are in a drawer. Stefan takes out two socks at random. Work out the probability that Stefan takes out two socks of the same co...

JU
Answered by Joseph U. Maths tutor
12553 Views

How do I solve the equation x^2 = 3x - 1 ?

First, we need to rearrange the equation into a quadratic. A quadratic equation will always have a squared element. 

To this, we move everything over to the left hand side of the equation and ...

MW
Answered by Matthew W. Maths tutor
8389 Views

Expand (2x-3)(4x+4) using the FOIL method.

Question: 

Expand (2x-3)(4x+4) 

We will be using the FOIL method. FOIL is an ancronym: 

F=first

O=outside

I=inside

L=last

So, to begin, we start...

MW
Answered by Miriam W. Maths tutor
10257 Views

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