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Factorise X^2 + 1X -12

Because the highest power of X is 2, this is a Quadratic Equation

When factorised, these look like 

       (x + a)(x + b)                 where a & b ar...

JW
Answered by Jack W. Maths tutor
5445 Views

Describe the process of evolution (6 Marks)

Mutations in genetic code occur naturally leading to different alleles in genes. (1 mark)

This leads to variation within a species. (1 m...

JW
Answered by Jack W. Biology tutor
19955 Views

Show clearly that (3√3)^2 = 27

Show clearly that (3√3)2 = 27

First of all, the question looks overfacing due to the surds, I can assure you that surds are not scary, they simply act as a means of clea...

EC
Answered by Eleanor C. Maths tutor
14706 Views

How to solve the absolute-value inequalities?

Absolute value means how far away you are from zero. It's better to draw a number line to understand and solve the question. 

Given the inequality l 4x+3 l >15 , the distance of the 4x...

CC
Answered by Cynthia C. Maths tutor
9125 Views

Describe the ways in which LDLs and HDLs affect the formation of atheromas.

Remember that often in A-level exams you can get marks from specific key words and phrases, so first of all try to remember everything you know about the topics in the question (

ID
Answered by Iona D. Biology tutor
11525 Views

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