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masakocerzenkop5sgfu
@masakocerzenkop5sgfu
July 2022
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Ляляляля109
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Answers & Comments
1.
1)![(6x^{2}-7x+4)-(4x^{2}-4x+18)=6x^{2}-7x+4-4x^{2}+4x-18=2x^{2}-3x-14 (6x^{2}-7x+4)-(4x^{2}-4x+18)=6x^{2}-7x+4-4x^{2}+4x-18=2x^{2}-3x-14](https://tex.z-dn.net/?f=%286x%5E%7B2%7D-7x%2B4%29-%284x%5E%7B2%7D-4x%2B18%29%3D6x%5E%7B2%7D-7x%2B4-4x%5E%7B2%7D%2B4x-18%3D2x%5E%7B2%7D-3x-14)
2)![(3x+9)+(-x^{2}-15x-40)=3x+9-x^{2}-15x-40=-x^{2}-12x-31 (3x+9)+(-x^{2}-15x-40)=3x+9-x^{2}-15x-40=-x^{2}-12x-31](https://tex.z-dn.net/?f=%283x%2B9%29%2B%28-x%5E%7B2%7D-15x-40%29%3D3x%2B9-x%5E%7B2%7D-15x-40%3D-x%5E%7B2%7D-12x-31)
3)![(10a^{2}-6a+5)-(-11a+a^{3}+6)=10a^{2}-6a+5+11a-a^{3}-6=-a^{3}+10a^{2}+5a-1 (10a^{2}-6a+5)-(-11a+a^{3}+6)=10a^{2}-6a+5+11a-a^{3}-6=-a^{3}+10a^{2}+5a-1](https://tex.z-dn.net/?f=%2810a%5E%7B2%7D-6a%2B5%29-%28-11a%2Ba%5E%7B3%7D%2B6%29%3D10a%5E%7B2%7D-6a%2B5%2B11a-a%5E%7B3%7D-6%3D-a%5E%7B3%7D%2B10a%5E%7B2%7D%2B5a-1)
2.
1)![3x(x^{2} -2x+3)=3x^{3} -6x^{2} +9x 3x(x^{2} -2x+3)=3x^{3} -6x^{2} +9x](https://tex.z-dn.net/?f=3x%28x%5E%7B2%7D%20-2x%2B3%29%3D3x%5E%7B3%7D%20-6x%5E%7B2%7D%20%2B9x)
2)![-4a(a^{2} -3ab+7b)=-4a^{3} +12a^{2}b-28ab -4a(a^{2} -3ab+7b)=-4a^{3} +12a^{2}b-28ab](https://tex.z-dn.net/?f=-4a%28a%5E%7B2%7D%20-3ab%2B7b%29%3D-4a%5E%7B3%7D%20%2B12a%5E%7B2%7Db-28ab)
3)![0.6a^{2}b(3ab^{2}-8ab+11a^{2}b^{2})=1.8a^{3}b^{3}-4.8a^{3}b^{2}+6.6a^{4}b^{3} 0.6a^{2}b(3ab^{2}-8ab+11a^{2}b^{2})=1.8a^{3}b^{3}-4.8a^{3}b^{2}+6.6a^{4}b^{3}](https://tex.z-dn.net/?f=0.6a%5E%7B2%7Db%283ab%5E%7B2%7D-8ab%2B11a%5E%7B2%7Db%5E%7B2%7D%29%3D1.8a%5E%7B3%7Db%5E%7B3%7D-4.8a%5E%7B3%7Db%5E%7B2%7D%2B6.6a%5E%7B4%7Db%5E%7B3%7D)