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(5X + 2/X) (5X+2/X) = Dikalikan ya broo..
jadi hasilnya 25X^2+ 10X/X +10X/X + 4/X^2
= 25X^2 + 20 + 4.X^-2 (25X PANGKAT 2 + 20 + 4 KALI X PANGKAT MIN 2)
Diturunkan
2.25X^2-1 + 0 + -2.4X^-2-1
Maka
50X + 8X^-3 Atau 50X + 8/X^3..
Semoga membantu yaa