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Solve: x^2 – x – 12 = 0

Method 1: Solve by inspection.
Demonstrate that quadratic equations can often be written in the form (x+a)(a+b) = 0. Explain that possible solutions arise as a result of either (x+a) or (x+b) =0. Not...

Answered by Nikesh A. • Maths tutor

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Describe the structure of arteries, veins and capillaries and explain its relation to function

ArteriesArteries carry blood away from the heart. They have a thick muscular wall with a small lumen. The thick muscular walls withstands the high pressure of the blood flowing fr...

Answered by Lucy D. • Biology tutor

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What are the stages of Mitosis and how do I remember what happens in each of them?

The easiest way of remembering the stages of Mitosis (which is when a divides) is by using a mnemonic that will help you remember, with a one word description of each phase to help you remember what happe...

Answered by Sue N. • Biology tutor

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A level - Find the coordinates of the stationary point of the curve with equation : (x+y-2)^2 + e^y -1

Immediately by reading the question we know that differentiation will need to bee used as we are asked to find the stationary point and this is found by equating the derivative equal to 0.Knowing this, fi...

Answered by Scarlett H. • Maths tutor

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Using simultaneous equations find x & y. Equation A: 3x + 2y = 3 -y and Equation B: 5x + 3y = 6 + x

So firstly, it makes it a lot easier if we put all the stuff we don't know on one side, and the numbers on the other. Be careful moving the -y over to the other side. This would give Equation A as 3x + 3y...

Answered by Elke M. • Maths tutor

2840 Views