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Factorise x^2 -2x-3

Because of the signs within the equation we know that the factorised solution will be in the form (x+?)(x-?)The two numbers in the brackets have a product of -3 and the sum of -2.In this case, the numbers...

JA
Answered by Joshua A. Maths tutor
10722 Views

Describe the secondary effects of volcanic eruptions [4]

Volcanic eruptions can result in a wide variety of secondary effects, which are effects which happen some time after the eruption itself. Most commonly, these are negative, for example, travel can be disr...

CG
14815 Views

What is the difference between the perfect tense and the preterite tense?

The preterite and perfect tenses are both used when an action has been completed. Then, what is the difference? Well, their use depends on regional differences and varieties of Spanish. But don't p...

JB
Answered by Joanes B. Spanish tutor
3332 Views

Describe how elements of the periodic table are arranged relating to their atomic structure. (6 marks)

Elements in the periodic table are arranged by increasing atomic number (number of protons). Atomic number of elements steadily increases across a period (horizontal rows of the periodic table). Elements ...

JG
Answered by Jake G. Chemistry tutor
23579 Views

Explain three differences between particles in a solid state and particles in a gaseous state.

Particles in a solid state are packed very close together whereas in a gaseous state they are very far apart.Particles in a solid state have a regular, structured pattern whereas gaseous particles are ran...

FL
Answered by Frankie L. Chemistry tutor
2416 Views

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