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Show that ((√ 18 + √ 2)^2)/(√8 - 2) can be written in the form a(b + 2) where a and b are integers.

To approach a question like this we must first simplify the numerator to make things easier. This ends up being equal to 32 (I will demonstrate on the whiteboard). Then we are left with a fraction that has a...
LM
Answered by Luka M. • Maths tutor
12085 Views

How and why does a cove form?

A cove is a coastal feature formed in places with a concordant rock arrangement. This means bands of different rock types sit parallel to the coast. Rock types have different properties such as hardness, str...
FC
Answered by Freya C. • Geography tutor
14109 Views

Sketch the graph of x^2 + 4x + 3

Although this sounds like a complex problem, we can simplify it down to just finding the roots of the equation. Let's start by drawing a standard x^2 curve (would draw). We can see that it goes through the (...
JC
Answered by Jackson C. • Maths tutor
4427 Views

Explain the different sources of background radiation

Some of these sources are man made although the main source is from the environment. Radon gas from rocks and cosmic rays from the sun are the main enviromental sources. For man made sources, the main source...
JC
Answered by Jackson C. • Physics tutor
2425 Views

What are the roots of the graph of this equation: x^2 + 9x + 18 = 0

Roots are where the graph crosses the x-axis, which we find by solving the equation to find x. x = -6 or x = -3
MH
Answered by Mona H. • Maths tutor
2829 Views