Questions: Given (5x+1)/((x-1)(x-2)) = a/(x-1) + 11/(x-2), then the value of a is
Transcript text: Given $\frac{5x+1}{(x-1)(x-2)}=\frac{a}{x-1}+\frac{11}{x-2}$, then the value of $a$ is
Solution
△ Determine the value of \( a \) in the given equation.
○ Combine fractions
▷ Combine the right side fractions using a common denominator.
☼ \(\frac{a}{x-1} + \frac{11}{x-2} = \frac{a(x-2) + 11(x-1)}{(x-1)(x-2)}\). The common denominator is \((x-1)(x-2)\).
○ Equate numerators
▷ Set the numerators equal since the denominators are the same.
☼ \(5x + 1 = a(x-2) + 11(x-1)\). Equating numerators gives \(5x + 1 = ax - 2a + 11x - 11\).
○ Solve for \( a \)
▷ Equate coefficients of \( x \) and constant terms to solve for \( a \).
☼ \(5 = a + 11\) and \(1 = -2a - 11\). Solving \(5 = a + 11\) gives \(a = -6\). Verification with \(1 = -2(-6) - 11\) confirms \(a = -6\).
✧ The value of \( a \) is \(-6\).
☺
The value of $a$ is -6.