Discover a wealth of knowledge at Westonci.ca, where experts provide answers to your most pressing questions. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.
Sagot :
To solve the equation [tex]\(\frac{3}{x+11} - \frac{5}{x-5} = 1\)[/tex], we can follow these steps:
1. Find a common denominator: The common denominator for the fractions [tex]\(\frac{3}{x+11}\)[/tex] and [tex]\(\frac{5}{x-5}\)[/tex] is [tex]\((x+11)(x-5)\)[/tex].
2. Rewrite each term with the common denominator:
[tex]\[ \frac{3}{x+11} = \frac{3(x-5)}{(x+11)(x-5)} \][/tex]
[tex]\[ \frac{5}{x-5} = \frac{5(x+11)}{(x-5)(x+11)} \][/tex]
3. Set up the equation with the common denominator:
[tex]\[ \frac{3(x-5) - 5(x+11)}{(x+11)(x-5)} = 1 \][/tex]
4. Combine the numerators and set the equation equal to 1:
[tex]\[ \frac{3(x-5) - 5(x+11)}{(x+11)(x-5)} = 1 \][/tex]
5. Eliminate the denominator by multiplying both sides of the equation by [tex]\((x+11)(x-5)\)[/tex]:
[tex]\[ 3(x-5) - 5(x+11) = (x+11)(x-5) \][/tex]
6. Simplify the left side of the equation:
[tex]\[ 3x - 15 - 5x - 55 = (x+11)(x-5) \][/tex]
Combining like terms:
[tex]\[ -2x - 70 = (x+11)(x-5) \][/tex]
7. Expand the right side of the equation:
[tex]\[ -2x - 70 = x^2 - 5x + 11x - 55 \][/tex]
Simplifying:
[tex]\[ -2x - 70 = x^2 + 6x - 55 \][/tex]
8. Set up the quadratic equation by moving all terms to one side:
[tex]\[ x^2 + 6x - 55 + 2x + 70 = 0 \][/tex]
Simplifying:
[tex]\[ x^2 + 8x + 15 = 0 \][/tex]
9. Solve the quadratic equation [tex]\(x^2 + 8x + 15 = 0\)[/tex] by factoring:
[tex]\[ (x + 3)(x + 5) = 0 \][/tex]
10. Find the roots of the factored equation:
[tex]\[ x + 3 = 0 \quad \text{or} \quad x + 5 = 0 \][/tex]
Solving these:
[tex]\[ x = -3 \quad \text{or} \quad x = -5 \][/tex]
So, the solutions to the equation [tex]\(\frac{3}{x+11} - \frac{5}{x-5} = 1\)[/tex] are:
[tex]\[ \boxed{-5, -3} \][/tex]
1. Find a common denominator: The common denominator for the fractions [tex]\(\frac{3}{x+11}\)[/tex] and [tex]\(\frac{5}{x-5}\)[/tex] is [tex]\((x+11)(x-5)\)[/tex].
2. Rewrite each term with the common denominator:
[tex]\[ \frac{3}{x+11} = \frac{3(x-5)}{(x+11)(x-5)} \][/tex]
[tex]\[ \frac{5}{x-5} = \frac{5(x+11)}{(x-5)(x+11)} \][/tex]
3. Set up the equation with the common denominator:
[tex]\[ \frac{3(x-5) - 5(x+11)}{(x+11)(x-5)} = 1 \][/tex]
4. Combine the numerators and set the equation equal to 1:
[tex]\[ \frac{3(x-5) - 5(x+11)}{(x+11)(x-5)} = 1 \][/tex]
5. Eliminate the denominator by multiplying both sides of the equation by [tex]\((x+11)(x-5)\)[/tex]:
[tex]\[ 3(x-5) - 5(x+11) = (x+11)(x-5) \][/tex]
6. Simplify the left side of the equation:
[tex]\[ 3x - 15 - 5x - 55 = (x+11)(x-5) \][/tex]
Combining like terms:
[tex]\[ -2x - 70 = (x+11)(x-5) \][/tex]
7. Expand the right side of the equation:
[tex]\[ -2x - 70 = x^2 - 5x + 11x - 55 \][/tex]
Simplifying:
[tex]\[ -2x - 70 = x^2 + 6x - 55 \][/tex]
8. Set up the quadratic equation by moving all terms to one side:
[tex]\[ x^2 + 6x - 55 + 2x + 70 = 0 \][/tex]
Simplifying:
[tex]\[ x^2 + 8x + 15 = 0 \][/tex]
9. Solve the quadratic equation [tex]\(x^2 + 8x + 15 = 0\)[/tex] by factoring:
[tex]\[ (x + 3)(x + 5) = 0 \][/tex]
10. Find the roots of the factored equation:
[tex]\[ x + 3 = 0 \quad \text{or} \quad x + 5 = 0 \][/tex]
Solving these:
[tex]\[ x = -3 \quad \text{or} \quad x = -5 \][/tex]
So, the solutions to the equation [tex]\(\frac{3}{x+11} - \frac{5}{x-5} = 1\)[/tex] are:
[tex]\[ \boxed{-5, -3} \][/tex]
We hope our answers were helpful. Return anytime for more information and answers to any other questions you may have. We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.