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Work out the value of 2^4

2x2x2x2 = 4x2x2 =8x2=16or(2x2)x(2x2)=(4)x(4)=16
KY
Answered by Kieran Y. • Maths tutor
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Factorise x^2 -2x-3

Because of the signs within the equation we know that the factorised solution will be in the form (x+?)(x-?)The two numbers in the brackets have a product of -3 and the sum of -2.In this case, the numbers ar...
JA
Answered by Joshua A. • Maths tutor
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How does the cell divide?

The cell divides through four stages:ProphaseMetaphaseAnaphaseTelophase and CytokinesisBefore prophase the DNA, genetic material of the cell, is coiled and not visible. All that is visible is a dark patch. D...
KH
Answered by Klara H. • Biology tutor
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How do I answer the classic med school interview question "why would you like to be a doctor rather than a nurse or pharmacist?"?

First, think about the role of the doctor. What have you seen the doctor do on your work experience? Have you seen other healthcare workers in action or researched their roles? We can plot out the different ...
MD
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Describe the secondary effects of volcanic eruptions [4]

Volcanic eruptions can result in a wide variety of secondary effects, which are effects which happen some time after the eruption itself. Most commonly, these are negative, for example, travel can be disrupt...
CG
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