Solve the Following Quadratic Equation by Factorization

Question:

\[ (a+b)^2x^2-4abx-(a-b)^2=0 \]

Solution

Given,

\[ (a+b)^2x^2-4abx-(a-b)^2=0 \]

Since

\[ (a-b)^2=(a+b)^2-4ab \]

Substituting, we get

\[ (a+b)^2x^2-4abx-(a+b)^2+4ab=0 \] \[ (a+b)^2(x^2-1)-4ab(x-1)=0 \] \[ (x-1)\Big[(a+b)^2(x+1)-4ab\Big]=0 \]

Now,

\[ (a+b)^2(x+1)-4ab \] \[ =(a+b)^2x+(a+b)^2-4ab \] \[ =(a+b)^2x+(a-b)^2 \]

Therefore,

\[ (x-1)\Big[(a+b)^2x+(a-b)^2\Big]=0 \]

Hence,

\[ x-1=0 \] or \[ (a+b)^2x+(a-b)^2=0 \] \[ x=1 \] or \[ x=-\frac{(a-b)^2}{(a+b)^2} \]

Final Answer

\[ \boxed{ x=1 \quad \text{or} \quad x=-\frac{(a-b)^2}{(a+b)^2} } \]

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