1. The form of the partial fractions expansion of the rational function (z²+9+45) (x-4)², where A, B, C, D are contants, is: OA. OB. O C. Ax+B Cr+D + (x²-4) x²+9x+45 + + B Cx+D (x-4)²2 x²+9x+45 Cx+D B + (x+2) x²+9x+45 Ca+D x²+9x+45 x-4 A (x-2) Ax+B (x-4)² OE. None of these + +

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