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x^2 + 6x + 8

Factorising Quadratics, double bracketsWe want two numbers that multiply to give 8 and add to give 6. Lets list the factors of 8: 1, 2, 4, 8From the list of of numbers above, which 2 can add to give +6?2 and...
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Answered by Maariya A. • Maths tutor
3418 Views

The graph above shows the line y = 3*x^2. Find the area beneath the graph from y = 0 to y = 5.

The area can be found using a definite integral. Integral from 0 to 5 of [3x 2 ] = [x] 5 0 = 5 - 0 = 5
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Answered by Christiana N. • Maths tutor
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When should I use the subjunctive?

The subjunctive is not a tense, but a mood.This means it can be applied to (or used) in different tenses.There are specific phrases which are followed by the subjunctive, however there are also certain circu...
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Answered by Emma C. • French tutor
2237 Views

What is the purpose of RAM in a computer?

RAM (Random Access Memory) is a form of memory which is used to save data about programs that are currently open. RAM is much faster than a HDD or SSD, and so the CPU has to spend less time in the "fetc...
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Answered by Jack G. • Computing tutor
39439 Views

Solve the simultaneous equations : x^2 + y^2 = 13 and x = y - 5 .

Below is the solution to the aforementioned question. In order to solve a simultaneous equation, one has to write one of the unkown variables in terms of the other. In this case, x was already written in rel...
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Answered by Sebastian G. • Maths tutor
18822 Views