Top answers

What is completing the square and how do you do it?

Completing the square is just another way of solving a quadratic equation; It is useful if you cannot factorise the equation. When completing the square you want to end up with your equation in the format: (...
AA
Answered by Alexander A. • Maths tutor
4607 Views

Find the possible values of x when x^2+8x+15=0

In order to find the value of x we can first factorise the equation. To factorise a quadratic we put it in the form:(x+a)(x+b)=0When multiplying out this general term we get:x^2 + bx + ax + ab = 0This can be...
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Answered by Clare B. • Maths tutor
4702 Views

What is the cultural difference between the second person pronouns "Sie" und "Du" in spoken language?

Whilst both pronouns are widely used, usage varies between regions in Germany, Austria and Switzerland. Broadly speaking, "du" is taken to be informal and "Sie" is taken to be formal - ho...
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Answered by Ben B. • German tutor
2742 Views

To what extent are the roles of women in the Iliad important?

Plan: Women as Plot Devices: Paris' stealing away of Helen is the cause of the war - However it is Paris' own actions which are more important to the plot than Helen. Book 1 Briseis taken from Achillies - ca...
TR
10411 Views

Find arsinh(x) in terms of x

let y=arsinh(x)x=sinh(y)=(e y - e -y )/22x=e y - e -y 2x*e y =e y -1 (multiply bye y )0=(e y ) 2 -2xe y -1This is a quadratic in e y with coefficients: a=1,b=-2x,c=-1Usinng the quadratic formula (and simplif...
JB
9331 Views