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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 ...

Answered by Maariya A. • Maths tutor

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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 [3x²] = [x]⁵₀= 5 - 0 = 5

Answered by Christiana N. • Maths tutor

2993 Views

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 ci...

Answered by Emma C. • French tutor

1803 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 "f...

Answered by Jack G. • Computing tutor

37418 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 ...

Answered by Sebastian G. • Maths tutor

16566 Views