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А) 4t(t-3)-t+3
Б) mn-m+k-kn
B) 2x(в квадрате)y+4xy-6-3x
А) 4t(t-3)-t+3
Б) mn-m+k-kn
B) 2x(в квадрате)y+4xy-6-3x
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Answers & Comments
mn - m + k - kn = (mn - m) + (k - kn) = m(n - 1) + k(1 - n) = m(n - 1) - k(n - 1) =
= (n - 1)(m - k)
2x²y + 4xy - 6 - 3x = (2x²y + 4xy) - (6 + 3x) = 2xy(x + 2) - 3(2 + x) =
= (x + 2)(2xy - 3)
Verified answer
А). 4t*(t-3)-(t-3)=(t-3)*(4t-1); б). (mn-m)-(kn-k)=m*(n-1)-k*(n-1)=(n-1)*(m-k); в). (2x^2y+4xy)-(3x+6)=2xy*(x+2)-3*(x+2)=(x+2)*(2xy-3). ^-это степень.