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expand and simplify (x+1)(x-1)

first begin by expanding the brackets using the CLAW method (shown using whiteboard diagram)multiply the first of each bracket together, we get x2multiply the first term of the first bracket an...

Answered by Adam T. Maths tutor
6934 Views

root3 (root6 + root12) can be written as Aroot2 + B

root3 (root6 + root12) (root3 * root6 ) + (root3 +root12) = root18 + root36= (root9 + root2) + 6= 3root2 +6a= 3 b = 6

Answered by Dorcus M. Maths tutor
2900 Views

What is the functionalist view of society?

Functionalists, such as Durkheim, argued that society is a structure in which everybody works together for the common good of us all. This idea was referred to as the organic analogy by Durkheim, who argu...

Answered by Rebecca D. Sociology tutor
2637 Views

Write down the expansion of (cosx + isinx)^3. Hence, by using De Moivre's theorem, find cos3x in terms of powers of cosx.

First, we expand by using binomial expansion (it is always helpful to draw Pascal's triangle to find each term's coefficients): 1 1
1 2 1
1 3 3 1
Since the function is raised to the...

Answered by Hiro F. Maths tutor
11194 Views

When should there be verb agreement?

In French, the past participles in compound tenses and moods often need to agree with other aspects of the sentence. You need to know both how to make them agree, and also when they should agree. Verb agr...

Answered by French tutor
1380 Views

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