Answer:
Solving for x gives us x = 1.33
The value for x cannot equal 3,-1
Explanation:
The initial expression is:
[tex]\frac{5}{x+1}+\frac{1}{x-3}=\frac{-6}{x^2-2x-3}[/tex]
The denominator of the right side can be factorized as (x - 3)(x + 1) because -3 and 1 multiply to -3 and sum to -2. So, we can rewrite the expression as:
[tex]\frac{5}{x+1}+\frac{1}{x-3}=\frac{-6}{(x-3)(x+1)}[/tex]
Now, we can sum the expression on the left side to get:
[tex]\frac{5(x-3)+(x+1)}{(x-3)(x+1)_{}}=\frac{-6}{(x-3)(x+1)}[/tex]
Both sides have a denominator of (x-3)(x+1), so we need to exclude the values where this denominator is equal to 0. Those values are:
x - 3 = 0
x - 3 + 3 = 0 + 3
x = 3
x + 1 = 0
x + 1 - 1 = 0 - 1
x = -1
So, the values of x cannot be equal to 3 and -1.
Then, if the denominators are the same, we can find the solution of the equation, making equal the numerators, so we need to solve:
[tex]5(x-3)+(x+1)=-6[/tex]
Solving for x, we get:
[tex]\begin{gathered} 5(x_{})+5(-3)+x+1=-6 \\ 5x-15+x+1=-6 \\ 6x-14=-6 \\ 6x-14+14=-6+14 \\ 6x=8 \\ \frac{6x}{6}=\frac{8}{6} \\ x=1.33 \end{gathered}[/tex]
Therefore, the answers are:
Solving for x gives us x = 1.33
The value for x cannot equal 3,-1