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Express (3 - sqrt(5))^2 in the form m + n*sqrt(5), where m and n are integers.

Layout the problem in a more recognisable form such as (3 - sqrt(5))(3 - sqrt(5)) . Notice that this looks a lot like a factorised quadratic equation , where sqrt(5) can be treated as a variable like x . The...
AP
Answered by Anselmo P. • Maths tutor
9298 Views

To use the conditional tense, what verb endings do I commonly use?

The conditional tense is used to say what would happen if something else were to occur or to talk about intentions to do something. If I was was rich, I would buy a big house. Si j'etais riche, je acheterais...
NH
Answered by Natalie H. • French tutor
1891 Views

What is the difference between stereotyping, prejudice and discrimination?

Stereotyping is a set of generalisations about a group of people or a social group which are often incorrect. Prejudice is a negative opinion formed before meeting someone. Discrimination is the act of treat...
NH
11026 Views

What is the difference between reliability and validity?

Reliability refers to how consistent the results of a study are or the consistent results of a measuring test. This can be split into internal and external reliability. Internal reliability refers to how con...
NH
92987 Views

A spacecraft needs to be slowed down from a speed of 96m/s to 8.2m/s. This can be done by firing an object as the spacecraft is moving. If the mass of the spacecraft is 6730kg and the object is 50kg, calculate the velocity of the ejected object.

As we have there is object being fired out of the front of the spaceship we know the ship will have a lower velocity than before using the conversation of momentum. "The total momentum of a system is th...
BQ
Answered by Ben Q. • Physics tutor
2417 Views