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а)
![ab(b-3)+a^2(b-3)=(b-3)(ab+a^2)=a(b-3)(b+a) ab(b-3)+a^2(b-3)=(b-3)(ab+a^2)=a(b-3)(b+a)](https://tex.z-dn.net/?f=ab%28b-3%29%2Ba%5E2%28b-3%29%3D%28b-3%29%28ab%2Ba%5E2%29%3Da%28b-3%29%28b%2Ba%29)
б)
![c(c-d)+d(d-c)=c(c-d)-d(c-d)=(c-d)(c-d) c(c-d)+d(d-c)=c(c-d)-d(c-d)=(c-d)(c-d)](https://tex.z-dn.net/?f=c%28c-d%29%2Bd%28d-c%29%3Dc%28c-d%29-d%28c-d%29%3D%28c-d%29%28c-d%29)
в)
![2(x-4)+c(4-x)-a(x-4)=2(x-4)-c(x-4)-a(x-4)= 2(x-4)+c(4-x)-a(x-4)=2(x-4)-c(x-4)-a(x-4)=](https://tex.z-dn.net/?f=2%28x-4%29%2Bc%284-x%29-a%28x-4%29%3D2%28x-4%29-c%28x-4%29-a%28x-4%29%3D)
![=(x-4)(2-c-a) =(x-4)(2-c-a)](https://tex.z-dn.net/?f=%3D%28x-4%29%282-c-a%29)
г)
![(x+2z)(x-3)+(x+2z)^2=(x+2z)(x-3+x+2z)= (x+2z)(x-3)+(x+2z)^2=(x+2z)(x-3+x+2z)=](https://tex.z-dn.net/?f=%28x%2B2z%29%28x-3%29%2B%28x%2B2z%29%5E2%3D%28x%2B2z%29%28x-3%2Bx%2B2z%29%3D)
![=(x+2z)(2x+2z-3) =(x+2z)(2x+2z-3)](https://tex.z-dn.net/?f=%3D%28x%2B2z%29%282x%2B2z-3%29)
б)
в)
г)
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