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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

9045 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

2969 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

5119 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

2580 Views

Let n be an integer greater than 1. Prove that n^2 - 2 - (n-2)^2 is an even number.

To show a number N is even, we must be able to express it in the form N = 2x for some other whole number x. Let's try to manipulate the given expression to see if we can put it in this form. By expanding ...

Answered by Sam L. • Maths tutor

17400 Views