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The quadratic equation x^2 + 4kx+2(k+1) = 0 has equal roots, find the possible values of k.

For a quadratic equation ax^2 +bx +c = 0 with equal roots we know the discriminant b^2-4ac must equal 0. From our equation we have a=1, b=4k and c=2(k+1) so using b^2-4ac = 0 we have (4k)^2 -4 1 2(k+1) = 0 E...
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Answered by Ayyub A. • Maths tutor
33005 Views

What are hormones and how do they differ from nerve cells (neurons)

Hormones are chemical messengers. They are released from special gland cells and travel in the bloodstream to reach their target organs, where they will have their effect. Whereas nerve cells carry electrica...
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Answered by Norviewu D. • Biology tutor
6440 Views

Avoir or être in the perfect tense?

French verbs either take the auxiliary verbs avoir or être when conjugating in the perfect tense (or passé composé). The best way to remember which verbs take which auxiliary is the MRS VANDERTRAMP method - ...
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Answered by Emma B. • French tutor
4763 Views

How many quotes and statistics should I have in the essay

The most important part is making use of the quotes/stats/facts. If you are putting them in without any evaluation then they are wasted they won't have any worth. Your time is precious in the exam so only pu...
CW
3586 Views

What should the structure of my essay be?

Don't get worked up with HOW much your write, consistency throughout your argument is the most important, you argument must be consistent throughout the whole essay so decide on your argument and structure y...
CW
3078 Views