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GCSE

How do you find the maximum and minimum value of a quadratic function with no use of calculus?

By completing the square, since this makes you see that the square will always be >= 0 and the other part allows you to calculate the minima or maxima depending on the sign in front of x2. E...

AO
Answered by Alexander O. • Maths tutor
9387 Views

How did Hitler change the Nazi party between 1924-1929? (8 marks)

This is a change/development question, and because it is 8 marks you should spend 12 minutes on it. Aim for 3 distinct points in 3 separate paragraphs. In order to get the full 8 marks, you must link

EG
Answered by Elly G. • History tutor
8778 Views

Describe the formation of a waterfall?

Waterfalls form where there is a layer of hard rock on top of a layer of soft rock.

The soft rock is eroded more quickly and undercuts the hard rock creating a ledge. The o...

EB
Answered by Emily B. • Geography tutor
3424 Views

describe the electrostatic force between water molecules

a type of wander waals force called hydrogen bonding due to the slightly positive hydrogens and slightly negative oxygen. this occurs because of the uneven attraction for electrons between the oxygen and ...

MS
Answered by Murray S. • Chemistry tutor
2690 Views

How does fractional distillation separate different hydrocarbons in crude oil?

Crude oil is a mixture of different hydrocarbons, which all have different lengths and must be separated by length into different useful 'fractions'. Fractional distillation achieves this by using the fac...

SJ
Answered by Samuel J. • Chemistry tutor
15758 Views

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