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Solve simultaneously: x + y + 3 = 0 and y = 2x^2 +3x - 1

First Step:

I believe here it is important to firstly look at each equation on its own and just try to think how the examiner would want you to answer this type of question.

Answered by Jamie S. • Maths tutor

4388 Views

Is respiration the same thing as breathing?

No, they are not the same (although they do both involve the respiratory system!).

The key differences:Breathing is the process of moving air in and out of the lungs - like when you take a bre...

Answered by Rhiannon L. • Biology tutor

23104 Views

How to create a secure password?

There are many different layers that can create a secure password. One of them is using numbers, symbols and mix of upper and lower case letters in your password makes it harder for someone to guess yo...

Answered by Leonidas P. • HTML and CSS tutor

2509 Views

What is centripetal force?

For an object moving in a circular path, the centripetal force is any force which acts towards the centre of this circular path. This means it acts perpendicular to the direction of forward motion.

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Answered by Ben H. • Physics tutor

5587 Views

Give examples of how the photoelectric effect supports the particle nature of light and defies the wave theory.

The photoelectric effect is the emission of electrons from a metal when light is incident on the surface. The effect is due to the absorption of energy by the surface electrons causing them to become e...

Answered by Ben H. • Physics tutor

28421 Views