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Differentiate y^3 + 3y^2 + 5

When you differentiate, you multiply by the old power and decrease the power by 1. If the expression has a constant in it, this differentiates to 0. So the answer is 3y^(3-1) + (3x2)y^(2-1) + 0 = 3y^2 +6y
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Answered by Chloe H. Maths tutor
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Factorise x^2 + 3x +2

You want two numbers that multiply to give 2 and add to give 3. Looking at factors is always easiest, so start by listing pairs of numbers that multiply together to give 2. There are only two such pairs, 1x2...
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Answered by Chloe H. Maths tutor
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How do you form the imperfect tense?

With AR verbs, first take off the AR from your infinitive to get the stem of the verb, then add the imperfect endings as follows:Yo .....abaTú .....abasél/ella/usted .....abaNosotros ábamosVosotros abaisEllo...
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Answered by Tom P. Spanish tutor
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What factors affect the social and economic impacts of an earthquake?

Magnitude - an earthquake higher up the richter scale is more potent so more likely to cause economic damage and a higher death/ injury toll Location - a natural disaster is defined as the overlapping of a n...
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Answered by Michela C. Geography tutor
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Why exactly did Petra's grandfather want to see the film?

Ich bin neulich mit meinem Opa ins Kino gegangen. Er wollte den Film sehen, weil er eine alte Version gesehen hatte, als er jung war. Answer - Because he saw an old version of it when he was younger Translat...
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Answered by Ashley H. German tutor
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