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Expand and simplify (x − 4)(2x + 3y)^2

You should start off by separating the brackets as the squared only applies to one of them. We'll deal with that one first. Write the (2x + 3y)^2 as two separate brackets of (2x+3y). Then multiply the first ...
LB
Answered by Lois B. • Maths tutor
4907 Views

'The Communists were more authoritarian than the Romanov Tsars.' How far do you agree with this view of the period from 1855 to 1964?

First question: What am I being assessed on?A: This is a question from a 2017 OCR A-Level History past paper. 2 extended essay questions, 2 hours, 60 marks each question. 1/3 of the marks are for demonstrati...
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Answered by Julian O. • History tutor
2981 Views

Factorise and solve x^2 - 8x + 15 = 0

Look for factors of 15 then when adding together equal -8. A solution to this is -5 and -3 as -5 x -3=15 and (-5)+(-3)=-8 . Therefore the factors of the quadratic are (x-5) and (x-3). Make (x-5)(x-3)=0 so bo...
AS
Answered by Amrit S. • Maths tutor
3542 Views

Describe the main features of a eukaryotic cell, including their functions

Eukaryotic cells contain mitochondrion, to produce energy for the cellA nuclear membrane to contain the DNA strands which control the cellCytoskeleton for the movement of molecules and to aid with stability ...
AA
Answered by Abby A. • Biology tutor
3286 Views

What is the difference between qualitative and quantitative market research?

Qualitative market research is the collection of data regarding attitudes and beliefs. An example of this is face to face interviews. On the other hand, quantitative market research is data that can be measu...
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