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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 X 2 term. First we have to multiply a and c. we then have to find two numbers z and y which multip...
JR
Answered by Jonathan R. • Maths tutor
3476 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:Fe 3+ (aq) + e - <==> Fe 2+ (aq) E 0 = +0.771 VLi + (aq) + e - <==> Li(s) E 0 = -3.040 V Step 1: Work out which half equation has the most positive standard electrode potentia...
FP
Answered by Fred P. • Chemistry tutor
2753 Views

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

"General Solution = Complimentary Function + Particular Integral"AE: m 2 + 7m + 12 = 0 solve for m (m+3)=0m = -4 or -3Hence the Complimentary Function = Ae -4t + Be -3t PI: [substitute u=ke -t ]u'=...
EO
4397 Views

What is the equation for photosynthesis?

6CO2 + 6H2O => (light energy) => C6H12O6 + 6O2
MT
Answered by Melanie T. • Biology tutor
3625 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 uncodified natu...
EG
Answered by Ed G. • Law tutor
6012 Views