Search our library of homework questions

Top answers

All subjects

All levels

How do I solve a quadratic equation: x^2-5x+6=0

When solving a quadratic equation, you have two options. Take the general form ax^2+bx+c=0Method 1: Solution by FactorisingWhen the numbers involved look fairly simple, look for a way to factorise the qua...

Answered by Naomi C. • Maths tutor

3543 Views

Expand and Simplify: (x+2)(x+3)(x−3)

(x+2)(x+3)(x−3)(x²+ 3x + 2x + 6)(x - 3) : Step 1 is to expand the first two brackets. (x²+ 5x + 6)(x - 3) : Step two is to simplify the quadratic. x³-3x²+5x

Answered by Alex H. • Maths tutor

8597 Views

How do I calculate rate coefficient units?

For any rate equation, the units have to be equal on either side of the equation. The rate of reaction always has the units mol dm^-3 s^-1, and the concentration species in the equatio...

Answered by Frances R. • Chemistry tutor

2765 Views

How do I start my essay?

Your introduction should always be a few sentences long, and should address the question directly. A good example of a question is 'How does Shakespeare present the theme of ambition in Macbeth?'Fo...

Answered by Kasie B. • English Literature tutor

4691 Views

MEdical school interview question- Describe this image to me

Remember to stay calm, don't worry about the time constraints. Take a second to think about what you are going to say. The aim of this station is to examine your communication skills.Start with the obviou...

Answered by Elsa D. • Medical School Preparation tutor

2410 Views