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3)...=5(m²+4mn+4n²)=5(m+2n)²
4)...=x²(x+y)-y²(x+y)=(x+y)(x²-y²)=(x+y)(x+y)(x-y)=(x+y)²(x-y)
5)...(a-b)²(a-b-3)
6)...=(m+n)²(1-n)
![1)...=x^8* x^{12} = x^{20} 1)...=x^8* x^{12} = x^{20}](https://tex.z-dn.net/?f=1%29...%3Dx%5E8%2A+x%5E%7B12%7D+%3D+x%5E%7B20%7D+)
![2)...=(a^5)^4=a ^{20} 2)...=(a^5)^4=a ^{20}](https://tex.z-dn.net/?f=2%29...%3D%28a%5E5%29%5E4%3Da+%5E%7B20%7D+)
![3)...=m^2n^2*m^3n^4/m^m^3n^3=m^5n^6/m^4n^3=mn^3 3)...=m^2n^2*m^3n^4/m^m^3n^3=m^5n^6/m^4n^3=mn^3](https://tex.z-dn.net/?f=3%29...%3Dm%5E2n%5E2%2Am%5E3n%5E4%2Fm%5Em%5E3n%5E3%3Dm%5E5n%5E6%2Fm%5E4n%5E3%3Dmn%5E3)
![4)...= x^{10} y ^{15}/x^4y^5= x^6y ^{10} 4)...= x^{10} y ^{15}/x^4y^5= x^6y ^{10}](https://tex.z-dn.net/?f=4%29...%3D+x%5E%7B10%7D+y+%5E%7B15%7D%2Fx%5E4y%5E5%3D+x%5E6y+%5E%7B10%7D+)
4)...=x²(x+y)-y²(x+y)=(x+y)(x²-y²)=(x+y)(x+y)(x-y)=(x+y)²(x-y)
5)...(a-b)²(a-b-3)
6)...=(m+n)²(1-n)
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