Question

can somebody help with me with this

2/x+1+4/x-1/x(x+1) I need to solve it with x=2 I don't manage it

Answer 1

so there are
2 4 1
----- + ----- - -------- = 0 so this is equal zero for being
x+1 x x(x+1)

one equation i think yes ?

Answer 2

and if there is x=2 like a root for this equation so than just you need substitute the 2 in place of x and make the calcule

ok ?

Answer 3

wait or if you dont like cooperating nothing i will say bye

Answer 4

I'm here

Answer 5

ok than make this calcule substitute the 2 in place of x and will get the result

ok ?

Answer 6

I wrote wrong it shall be 2/2+1+5/2-1/2(2+1)

Answer 7

I've taken away all the x's now

Answer 8

it would be good to use parentheses
2/2+1 is normally interpreted as \( \frac{2}{2}+1\)
while 2/(2+1) means \( \frac{2}{2+1}\)

But to do this problem, do the arithmetic. How far can you get?

Answer 9

Add 1 to 2 to get 3.




Multiply
multiply
To compute a product; to perform a multiplication. -1 by 3 to get -3.




Reduce the expression
expression
A mathematical symbol, or combination of symbols, representing a value, or relation. Example: 2+2=4 by removing a factor
factor
One of two or more expressions that are multiplied together to get a product. of 2 from the numerator
numerator
The top part of a fraction. and denominator
denominator
The bottom part of a fraction. .




Combine
combine
To join, or bring together. the numerators
numerator
The top part of a fraction. of all fractions
fraction
A number used to name a part of a group or a whole. The number below the division line is the denominator, and the number above the division line is the numerator. that have common denominators
denominator
The bottom part of a fraction. .




Subtract 3 from 5 to get 2.




Reduce the expression
expression
A mathematical symbol, or combination of symbols, representing a value, or relation. Example: 2+2=4 by removing a factor
factor
One of two or more expressions that are multiplied together to get a product. of 2 from the numerator
numerator
The top part of a fraction. and denominator
denominator
The bottom part of a fraction. .

1+1+1


Add 1 to 1 to get 2.

2+1


Add 1 to 2 to get 3.

3

Answer 10

if the problem is
\[ \frac{2}{x+1} +\frac{5}{x} -\frac{1}{x(x+1)}\]with x=2
\[ \frac{2}{2+1} +\frac{5}{2} -\frac{1}{2(2+1)}\]
\[ \frac{2}{3} +\frac{5}{2} -\frac{1}{2\cdot (3)}\]
\[ \frac{2}{3} +\frac{5}{2} -\frac{1}{6}\]
you have 3 fractions, and need a common denominator. 6 will work
multiply the first fraction by 2/2. multiply the 2nd fraction by 3/3
\[ \frac{2}{3}\cdot\frac{2}{2} +\frac{5}{2}\cdot\frac{3}{3} -\frac{1}{6}\]
to multiply fractions, multiply top times top and bottom times bottom
\[ \frac{4}{6} +\frac{15}{6} -\frac{1}{6}\]
now add or subtract the numerators (tops)
\[ \frac{4+15-1}{6} \]
\[ \frac{18}{6} \]
3