Top answers


How do I factorise a quadratic equation?

A quadratic equation will always take the form ax 2 + bx + c, where x is a variable and a, b and c are numbers. The equation may be given to you with several x 2 values, several x values or several numbers. ...
KM
Answered by Kate M. Maths tutor
7313 Views

If y=(x^2)*(x-10), work out dy/dx

The question is pretty straightforward and asks you to find the derivative of y, which is a function of x. The most simple way to do this is to first eliminate the brackets and then derive. Thus we get y=x^3...
MC
4538 Views

C1 June 2014 Q)4 - https://pmt.physicsandmathstutor.com/download/Maths/A-level/C1/Papers-Edexcel/June%202014%20QP%20-%20C1%20Edexcel.pdf

a) At A y=0, therefore if we solve: 0= (1/x)+1 we get x=-1.b)First step when drawing graphs is to find roots. x=0, x=2. Because x=0 acts as two of roots the graph only touches x=0. The graph is a positive cu...
AS
Answered by Arun S. Maths tutor
9099 Views

How much subject knowledge do I include in my personal statement?

When writing a personal statement, it is very easy to feel overwhelmed by all the topics that you know you need to include- work experience, volunteering, achievements, hobbies and medical interest. In tryin...
PP
2169 Views

Explain why hydrogen bromide has a higher boiling point than hydrogen chloride.

Hydrogen bromide and hydrogen chloride are both simple molecules. They have London forces between molecules. It is essential that you highlight that these interactions (induced dipole-dipole) are BETWEEN the...
PP
Answered by Pooja P. Chemistry tutor
29093 Views