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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
11934 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
4325 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
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Answered by Mona H. • Maths tutor
2766 Views

The line y = x^2 -3x + 2 is reflected in the x-axis, find the equation of the new line that has been reflected.

To find the new equation you use the formula y = -f (x) to find the equation of the reflected line. Using y = -f (x) on y=x 2 - 3x + 2 means you need to change the signs from positive to negative or negative...
LM
Answered by Lily M. • Maths tutor
6799 Views

Make c the subject of the formula a=3c-12

To approach this question, you need to think of simple algebra and what the question is asking for. If they want c to be the subject of the formula, they are looking for the answer to be in terms of c. To pu...
RH
Answered by Raphaelle H. • Maths tutor
5547 Views