12ху²-6х²=6х(2у²-х)
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12ху² - 6х² = 6х·2у² - 6х·х=6х · (2у² - х)
Ответ: 6х · (2у² - х)
x^2-3x+2=0
D= b^2-4ac
D= 9-4×2×1=9-8=1
x1= -b-1/2a, x1= 3-1/2=1
x2= -b+1/2a, x2= 3+1/2=2
Ответ: x1=1; x2=2