1) с(х - 3) - d(х - 3) = (х - 3)(с - d)
2) m(р - k) - (р - к) = m(р - k) - 1 · (р - к) = (p - k)(m - 1)
3) m(х - у) - n(у - х) = m(x - y) + n(x - y) = (x - y)(m + n)
4) х(2 - х) + 4(х - 2) = x(2 - x) - 4(2 - x) = (2 - x)(x - 4)
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1) с(х - 3) - d(х - 3) = (х - 3)(с - d)
2) m(р - k) - (р - к) = m(р - k) - 1 · (р - к) = (p - k)(m - 1)
3) m(х - у) - n(у - х) = m(x - y) + n(x - y) = (x - y)(m + n)
4) х(2 - х) + 4(х - 2) = x(2 - x) - 4(2 - x) = (2 - x)(x - 4)