If two roots of the equation \( x^5 - 9x^4 + 27x^3 - 23x^2 - 24x + 36 = 0 \) are repeated roots of multiplicity 2 and all the roots are integers then the sum of the squares of all different roots of the equation is:
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When multiplicity is given, the product of roots often simplifies to a form like \( k^2 \cdot c \). Start by testing small perfect square factors of the constant term to find the repeated roots.