Top answers

Solve the quadratic: 3x^2+4x = 20 to find x.

Quadratic formula: where ax^2+bx+c =0, x = (-b±√(b^2-4ac))/2a.Rearrange the formula in the question to get 3x^2+4x-20 = 0.From the quadratic in the question we can see that a = 3, b = 4, c = -20.Therefore x ...
SF
Answered by Samuel F. • Maths tutor
6449 Views

Account for the success of the First Crusade.

[Note the dates of the First Crusade and its success] The First Crusade (1095-99) accomplished its stated aim of recapturing Jerusalem from its Muslim rulers in 1099, placing it, and considerable parts of Pa...
SF
Answered by Samuel F. • History tutor
6764 Views

What was the most important cause of the Second World War?

[Note at least three potential causes of WWII] Three causes of WWII include: the Treaty of Versailles; the Great Depression; and the policy of Appeasement. [Contrast cause 1 with cause 2, and then cause 3 (y...
SF
Answered by Samuel F. • History tutor
6055 Views

How can I make my essay stand out?

There are a few steps to make a foreign language essay stand out: Plan out your ideas before you start writingTry and take a few minutes to write an essay plan in which you organise your key ideas, and write...
CN
Answered by Cerys N. • French tutor
2560 Views

What's the difference between Potential Difference and Electromotive Force

Although both are measured in volts, there is a subtle difference in their respective definition. Electromotive Force is the transfer of chemical energy in a battery (multiple single cells) into electrical e...
JJ
Answered by Joseph J. • Physics tutor
5012 Views