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simplify fully: (x^2+x-6)/(x^2-7x+10)

First, the numerator and denominator of the fraction need to be factorised:(x+3)(x-2)/(x-5)(x-2)The 'like' terms should then be crossed out; in the case above, it is the (x-2) brackets.(x+3) (x-2) /(x-5) (x-...
LL
Answered by Lili L. • Maths tutor
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Explain how successive ionization energies account for the existence of three main energy levels in the sodium atom.

Make the student observe and analyse the electronic configuration of sodium and the trends in ionization energies for this element. We note a large increase in ionization energy between the 1st and 2nd elect...
YT
Answered by Yasmin T. • Chemistry tutor
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What is the difference between mitosis and meiosis?

Essentially they both describe the same biological process whereby chromosomes are divided during cell division. Mitosis produces two diploid daughter cells which are identical to eachother (produces new som...
KG
Answered by Keslin G. • Biology tutor
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Explain why the Confederacy lost the American Civil War. (8 marks)

Understanding the causes of Union victory in the American Civil War remains a widely debated historiographical topic. Therefore, in order to determine why the Confederacy lost the war one must assess both mi...
DJ
Answered by Dominic J. • History tutor
5369 Views

How does blood flow through the heart?

Deoxygenated blood enters the heart through the superior/ inferior vena cava into the right atriumThe atria contract and blood flows through the tricuspid valve into the right ventricleThe right ventricle co...
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Answered by Charlotte A. • Biology tutor
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