The problem asks us to simplify the expression $\frac{1}{(x+1)(x+2)} - \frac{5}{(x+2)(x-3)}$.

AlgebraFractional ExpressionsSimplificationAlgebraic ManipulationRational Expressions
2025/4/23

1. Problem Description

The problem asks us to simplify the expression 1(x+1)(x+2)5(x+2)(x3)\frac{1}{(x+1)(x+2)} - \frac{5}{(x+2)(x-3)}.

2. Solution Steps

We need to find a common denominator to combine the two fractions. The least common denominator (LCD) is (x+1)(x+2)(x3)(x+1)(x+2)(x-3).
We rewrite the first fraction with the LCD:
1(x+1)(x+2)=1(x+1)(x+2)(x3)(x3)=x3(x+1)(x+2)(x3)\frac{1}{(x+1)(x+2)} = \frac{1}{(x+1)(x+2)} \cdot \frac{(x-3)}{(x-3)} = \frac{x-3}{(x+1)(x+2)(x-3)}
We rewrite the second fraction with the LCD:
5(x+2)(x3)=5(x+2)(x3)(x+1)(x+1)=5(x+1)(x+1)(x+2)(x3)\frac{5}{(x+2)(x-3)} = \frac{5}{(x+2)(x-3)} \cdot \frac{(x+1)}{(x+1)} = \frac{5(x+1)}{(x+1)(x+2)(x-3)}
Now, we can subtract the two fractions:
x3(x+1)(x+2)(x3)5(x+1)(x+1)(x+2)(x3)=(x3)5(x+1)(x+1)(x+2)(x3)\frac{x-3}{(x+1)(x+2)(x-3)} - \frac{5(x+1)}{(x+1)(x+2)(x-3)} = \frac{(x-3) - 5(x+1)}{(x+1)(x+2)(x-3)}
Simplify the numerator:
x35(x+1)=x35x5=4x8x - 3 - 5(x+1) = x - 3 - 5x - 5 = -4x - 8
So the expression becomes:
4x8(x+1)(x+2)(x3)\frac{-4x - 8}{(x+1)(x+2)(x-3)}
We can factor out a 4-4 from the numerator:
4x8=4(x+2)-4x - 8 = -4(x+2)
Thus, the expression becomes:
4(x+2)(x+1)(x+2)(x3)\frac{-4(x+2)}{(x+1)(x+2)(x-3)}
We can cancel the (x+2)(x+2) term in the numerator and the denominator:
4(x+1)(x3)\frac{-4}{(x+1)(x-3)}

3. Final Answer

4(x+1)(x3)\frac{-4}{(x+1)(x-3)}

Related problems in "Algebra"

We need to solve the following equations for $x$: 28. $\frac{4}{x+1} = \frac{7}{3x-2}$ 29. $\frac{x+...

Linear EquationsSolving EquationsFractional Equations
2025/6/25

We are asked to solve the following equations: 28. $\frac{4}{x+1} = \frac{7}{3x-2}$ 29. $\frac{x+1}{...

Linear EquationsSolving EquationsFractionsAlgebraic Manipulation
2025/6/25

We are asked to solve problem number 28 from the image, which is to find the value of $x$ in the equ...

Linear EquationsSolving EquationsFractions
2025/6/25

The problem is to solve the following equations for $x$: 19. $\frac{x}{2} - \frac{x}{5} = 3$ 20. $\f...

Linear EquationsSolving EquationsFractions
2025/6/25

We are asked to solve three linear equations. 10. $\frac{x+3}{2} = \frac{x-4}{5}$ 11. $\frac{2x-1}{3...

Linear EquationsSolving EquationsFractions
2025/6/25

We need to solve for $x$ in each of the given equations.

Linear EquationsSolving for xFractionsCross-multiplication
2025/6/25

Solve for $x$ in the equation $\frac{x+1}{3} = \frac{x-1}{4}$.

Linear EquationsSolving Equations
2025/6/25

The given sequence is -1, 2, 7, 14, 23, ... We are asked to find a formula for the $n$-th term of th...

SequencesSeriesQuadratic SequencesFinding the nth termAlgebraic Manipulation
2025/6/25

The image shows a sequence of numbers: 6, -11, 22, -44, 88, -132. We need to identify the pattern an...

SequencesPattern RecognitionSeries
2025/6/25

Solve the equation $2(x+1)^2 - (x-2)^2 = x(x-3)$ for $x$.

Quadratic EquationsEquation SolvingAlgebraic Manipulation
2025/6/25