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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 ...
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Answered by Samuel F. • Maths tutor
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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...
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Answered by Samuel F. • History tutor
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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...
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Answered by Samuel F. • History tutor
5782 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...
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Answered by Cerys N. • French tutor
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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...
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Answered by Joseph J. • Physics tutor
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