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Derive the quadratic formula (Hint: complete the square)

Firstly, the quadratic formula finds the roots of a quadratic equation. So this means f(x) = 0. A general polynomial with highest power 2 looks like: ax 2 + bx +c. Usings the two facts we just stated, we sol...
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Answered by Riu K. • Maths tutor
4170 Views

Describe the Le Chantelier principle

If a factor affecting the position of an equlibirum is altered, the position fo equlibrium shifts to oppose the effect of the change.
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Answered by Sudip S. • Chemistry tutor
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Describe the process of nuclear fission is induced

Single and slow moving neutron strikes a uranium nucleus. This results in the nucleus to be large and unstable. The unstable nucleus splits into two unequal nuclei and some fast neutrons. The neutrons can in...
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Answered by Sudip S. • Physics tutor
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Factorise 7x^2+4x-3

look for common factors but there are not any in this case, it is a quadratic with 3 terms therefore it can be factorised into 2 brackets. First we look at the first term, since 7 is a prime number you can o...
RP
Answered by Reena P. • Maths tutor
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Vous êtes en vacances et vous envoyez une carte postale à votre ami. Dites où vous êtes, le temps qu’il fait, ce que vous avez fait et ce que vous avez l’intention de faire pendant le reste du séjour

Coucou Fleur! Ça va? Moi, ça va super bien! Je suis en Espagne à Malaga avec ma famille pour mes vacances. Nous logeons dans une villa au bord de la mer, c’est fantastique! Ici il fait très beau et très chau...
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Answered by Mariam H. • French tutor
17793 Views