Упростите:
а) 3a^2b-ab^2-a^2b+2ab^2
б) mn-7mn^2-mn-7mn^2
в) 10xy^2-10xy+x^2y
г) 5xz^2-4x^2z+xz-5xz^2
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Упростите:
а) 3a^2b-ab^2-a^2b+2ab^2
б) mn-7mn^2-mn-7mn^2
в) 10xy^2-10xy+x^2y
г) 5xz^2-4x^2z+xz-5xz^2
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Answers & Comments
1) ab(3a-b-a+2b) = ab(2a+b)
2)mn(1-7n-1-7n) = -14mn^2
3) xy(10y-10+y) = xy(11y-10)
4)xz(5z-4x+1-5z) = xz(1-4x)