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Factorise x^2 +6x + 8

Firstly list two numbers that add to 6 and right them down e.g. 4 and 2.Secondly list two numbers that multiply to form 8 e.g. 8 and 1 or 4 and 2.The numbers that appear in both solutions will therefore b...

Answered by Euan M. • Maths tutor

3172 Views

What is the difference between the central nervous system and the peripheral nervous system

The central nervous system consists of the brain and spinal chord, whereas the peripheral nervous system consists of the spinal chord alone.

Answered by Patrick M. • Biology tutor

2916 Views

Find the first three terms in the expansion of (4-x)^(-1/2) in ascending powers of x.

(4-x)^-1/2= (4 (1 - x/4))^-1/2 = 1/2 (1 - x/4)^-1/2 = 1/2 ( 1 + x/8 + 3x²/128 + ...) = 1/2 + x/16 + 3x²/256 + ...Therefore the first three ter...

Answered by • Maths tutor

16636 Views

Refer to question taken from Edexcel Maths Paper

Refer to question taken from Edexcel Maths Paper.

Answered by Angus B. • Maths tutor

2519 Views

How do you solve a quadratic equarion

with quadratic equations you will either get two x values for your answer, one value or zero values. This can be tested by rhe value of your discriminant when values have been subbed in. If it’s greater t...

Answered by Henry B. • Maths tutor

2695 Views