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=> (5x-3)² = 68/17
=> (5x-3)(5x-3) = 4
=> 25x²-15x-15x+9 = 4
=> 25x²-30x+9-4 = 0
=> 25x²-30x+5 = 0 (disederhanakan dibagi 5)
=> 5x²-6x+1 = 0 difaktorkan, sehingga
=> (5x-1)(x-1) = 0
=> x = 1/5 dan x = 1