✨ Jawaban Terbaik ✨
(x¹⁰-1)/(x-1)²=(x⁹+x⁸+x⁷+x⁶+x⁵+x⁴+x³+x²+x+1)/(x-1)
[(x¹⁰-1)/(x-1)² - 10/(x-1)]
=(x⁹+x⁸+x⁷+x⁶+x⁵+x⁴+x³+x²+x-9)/(x-1)
=x⁸+2x⁷+3x⁶+4x⁵+5x⁴+6x³+7x²+8x+9
當 x→1 , [(x¹⁰-1)/(x-1)² - 10/(x-1)]→1+2+3+4+5+6+7+8+9
=45
✨ Jawaban Terbaik ✨
(x¹⁰-1)/(x-1)²=(x⁹+x⁸+x⁷+x⁶+x⁵+x⁴+x³+x²+x+1)/(x-1)
[(x¹⁰-1)/(x-1)² - 10/(x-1)]
=(x⁹+x⁸+x⁷+x⁶+x⁵+x⁴+x³+x²+x-9)/(x-1)
=x⁸+2x⁷+3x⁶+4x⁵+5x⁴+6x³+7x²+8x+9
當 x→1 , [(x¹⁰-1)/(x-1)² - 10/(x-1)]→1+2+3+4+5+6+7+8+9
=45
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