1. а) (а²-2b)²
б) (-7x-1)²
в) (-5а + 2b в четвертой степени)²
г) (x-12) (х+12)
д) (-4h3+7) (4h3+7)
2.
а)18с²-2(3с-1)²
б) (2а+3) (а-3)-2а(4×6а)
в)(2x+3) (3-2x)-(2x-5)²-10x
3.
а)x(x-2)(x+1) = x2(x-1)
б) (2y-1)² - 4(y-2)(y+2) = -5y+18
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