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Find the roots of the following equation: x^2 + x - 6 = 0

Student should factorise equation to (x-2)(x+3) = 0 This gives roots of 2 and -3
AR
Answered by Adam R. • Maths tutor
2192 Views

How do I explain the process of Natural Selection?

VOSSAG V - Variation: all organisms undergo varying amounts of genetic variation due to genetic mutations or environmental factors (such as geographic separation). O - Overpopulation: all populations have th...
BK
Answered by Ben K. • Biology tutor
7146 Views

What is the definition of Avogadro's constant and when should I use it?

Avogadro's constant is defined as the number of atoms/molecules in one mole of a substance . It's value is approximately 6.023 x 10^23. It is often used in conjunction with the equation "moles = mass (i...
BK
Answered by Ben K. • Chemistry tutor
16918 Views

How can I improve my accent in French?

Going from English to French or from French to English is notoriously tricky accent-wise–while English is an accented language with more nasal and guttural timbres, while French is 'flatter' and tends to be ...
PA
2296 Views

What kind of topics can come up in the exam? And any advice on how to tackle them.

This varies. Usually the topics are very broad. Most students struggle with writing essays because of the grammar and sentence structure, in addition to trying to use complex words. Topics include: Holiday d...
JL
Answered by Jenny L. • Mandarin tutor
2009 Views