F.S.

1 Questions
9 Answers

0

864

1

+22

Factorise

How do you factorise x 3+5.x 2+8.x+4=0
I know the solution is (x+1).(x+2)²=0, but how do you get there?

F.S. Nov 15, 2013

+22

0

Can you give an example?

F.S.Nov 19, 2013

+22

0

F.S.Nov 19, 2013

+22

0

sin(30°)=1/2

x=55*sin(30°)=55*1/2=27,5

There is a table you should memerize:

F.S.Nov 15, 2013

+22

0

Which brand? Which model? It is often different with every type.

An easy way to do it is this. Lets say you need 41% from 200:
200*41/100 or 200*0,41 = 81

F.S.Nov 15, 2013

+22

0

You probably mean do to this without writing anything down?
If it is that it is pretty simple:

189 is 11 lower than 200, so what i should do is:

643-200=443
443+11=454

This way you can easily do small calculations from the heart.

F.S.Nov 15, 2013

+22

0

Can you be more specific?

Do the other numerics keep their sequence? (f.e. 12345 and 2345 1)
Or can you mix them up? (f.e. 12345 and 5342 1)

Is the 1 part of the original 5 digits (f.e. 12345)
Or dou you have a 5 digit number and you need the add the? (f.e. 23456 and 123456)

F.S.Nov 15, 2013

+22

0

in British Englis 317 billion
in American English 317 trillion

http://en.wikipedia.org/wiki/Names_of_large_numbers

F.S.Nov 15, 2013

+22

0

As far is I know this is concidered to be undefined. Just like 0/infinity or infinity/0 or 0/0 or infinity/infinity

F.S.Nov 15, 2013

+22

0

5/8+1/4=5/8+2/8=7/8

F.S.Nov 15, 2013