Search our library of homework questions

Top answers

All subjects

All levels

How can I factorise 2(x^2)+3x+1=0 ?

This quadratic equation is in the form ax^2+bx+c=0 (a=2, b=3, c=1), where there is a coefficient in front of X² term. First we have to multiply a and c. we then have to find two numbers z and y...

Answered by Jonathan R. • Maths tutor

2821 Views

How do I write the full equation of a cell from two half cells? (basic, with matching electron counts and no water/acid)

Lets use an example:Fe³⁺(aq) + e^- <==> Fe²⁺(aq) E⁰ = +0.771 VLi⁺(aq)+ e^- <==> Li(s) E⁰ = -3...

Answered by Fred P. • Chemistry tutor

2083 Views

Find the general solution to: d^(2)x/dt^(2) + 7 dx/dt + 12x = 2e^(-t)

"General Solution = Complimentary Function + Particular Integral"AE: m² + 7m + 12 = 0 solve for m(m+3)=0m = -4 or -3Hence the Complimentary Function = Ae^-4t

Answered by Edward O. • Further Mathematics tutor

2957 Views

What is the equation for photosynthesis?

6CO2 + 6H2O => (light energy) => C6H12O6 + 6O2

Answered by Melanie T. • Biology tutor

2775 Views

"Discuss the disadvantages of judicial precedent." AQA A Level Law, 2017.

Judicial precedent is the incremental approach of justices in following previous case law decisions in order to maintain a stable basis for UK common law.
One disadvantage is that, due to the uncodif...

Answered by Ed G. • Law tutor

5145 Views