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Describe the 3 types of solution to a quadratic equation

The behaviour of the solution depends on the value of the discriminant, D = b 2 – 4 ac, (aptly named as it allows you to discriminate between solutions) If D > 0: The equation has real roots (the parabola...
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Answered by George L. • Maths tutor
3963 Views

For which values of x is the following inequality satsified: x^2 + 6x + 6 < 1

(I assume I can use the whiteboard in an actual lesson/interview) So this question might seem quite simple, and maybe it is, but this type of question can catch many students out. The first step is always to...
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Answered by Nabeel H. • Maths tutor
4069 Views

Simplify: 2x + 6y + 2y - x

Collect like terms 2x - x +6y +2y 2. Simplify like terms 2x - x = x 6y+2y=8y 3. Write final answer x + 8y
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Answered by Noureen L. • Maths tutor
4072 Views

We have a parallelogram with sides of 8cm and 5cm and an angle of 140 degrees, calculate the length of two diagonals

We would first like to work out the size of all the angles which have not been give, as one angle is 140 degrees we know the angle opposite to it is also 140 degrees due to the symetry of the shape. The two ...
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Answered by Thomas O. • Maths tutor
4255 Views

If one shop has melons for sale on a buy one get one free offer at £2 a melon with each melon weighing 2kg, and a second shop offering melons at 30p per kilogram. Which shop is the best value for money?

Firstly you would analyse the cost of the melons in the first shop per kg. So you could buy 2 melons for £2 because they're buy one get one free and each weighs 2kg so therefore you're getting 4kg of melon f...
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Answered by Faye B. • Maths tutor
3620 Views