Simplification: (1) (5ab) / (3C) × (- (12c ^ 2) / (5ab ^ 2)) / / 3C / A; (2) 4 / (x-1) - x + 1

Simplification: (1) (5ab) / (3C) × (- (12c ^ 2) / (5ab ^ 2)) / / 3C / A; (2) 4 / (x-1) - x + 1

（1）（5ab）/（3c）×[-（12c^2）/（5ab^2）]÷3c/a；
=-（5ab）/（3c）×（12c^2）/（5ab^2）×a/3c
=-1/（3c）×（12c^2）/b×a/3c
=-4c/b×a/3c
=-4a/(3b)
（2）4/（x-1）-x+1
=4/（x-1）-(x-1)
=4/（x-1）-(x-1)²/(x-1)
=[4-(x-1)²]/(x-1)
=[4-(x²-2x+1)]/(x-1)
=[4-x²+2x-1]/(x-1)
=(3-x²+2x)/(x-1)

Elden Ring Premiere

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