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Let me rephrase this question slightly: "Find all the roots of the equation x^n - 1 = 0." We know by the fundamental theorem of algebra that an nth degree polynomial has exactly n roots. So the exc...

The Hadley cell is one part of the tricellular global atmospheric circulation of air. It begins at the equator, where intense solar radiation warms the air causing it to rise through convection. This rising ...

The passive voice in Spanish takes the verb ser and the past participle . You must conjugate the verb according to the tense needed and make the past participle match the gender and number of the subject. Fo...

1) These prepositions take the dative case: aus, außer, bei, mit, nach, seit, von, zu, gegenüber 2) These prepositions take the accusative case: bis, durch, entlang, für, gegen, ohne, um, wider 3) These prep...

It depends on what you want to say. 1) If you are expressing something that happens in the present , you must use the present tense in both clauses. For example: si j'ai faim, j'achète beaucoup de chocolat (...