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Express 1/(x(1-3x)) in partial fractions.

1/(x(1-3x))= A/x+ B/(1-3x) 1= A(1-3x) + B(1-3x)

when x=0    1=A

when x= 1/3     1=B/3 so B=3

1/(x(1-3x))= 1/x + 3/(1-3x)

LB
Answered by Laura B. Maths tutor
8898 Views

Expand and simplify (m + 3)(m + 10)

(m+3)(m+10)

m2 + 3m+ 10m + 30

m2 +13m+ 30

LB
Answered by Laura B. Maths tutor
16024 Views

Translate the following text into Spanish.

Text to be translated: 

Of all the problems that worry teenagers nowadays, it could be said that unemployment is the worst since it often leads to poverty and anti-social behaviour. However, a frie...

LB
Answered by Laura B. Spanish tutor
2815 Views

How do you know when to use the subjunctive in the present tense?

I find that the acronym WEIRDO is always the perfect starting block for deciding when the use of the subjunctive is appropriate. 

  1. W - wish - when a desire is expressd in the sentence from one...
AR
Answered by Alex R. Spanish tutor
1750 Views

Express 9^(3x+1) in the form 3^y, giving "y" in the form "ax+b" where "a" and "b" are constants.

9= 32 so 93x+1 = 32(3x+1) = 36x+2

y= 6x+2 where a=6 and b=2 

LB
Answered by Laura B. Maths tutor
18592 Views

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