2. Упростите выражение: (2∙а + b) ∙ (3∙a – 4∙b) – 6 (a – b) ^2 .3. Упростите выражение: (–2∙х 2 ∙у) 3 ∙ ( –4∙х 3 ∙у) ^2. Created by konstantinberstejn. algebra-ru

2. Упростите выражение: (2∙а + b) ∙ (3∙a – 4∙b) – 6 (a

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2. Упростите выражение: (2∙а + b) ∙ (3∙a – 4∙b) – 6 (a – b) ^2 .
3. Упростите выражение: (–2∙х 2 ∙у) 3 ∙ ( –4∙х 3 ∙у) ^2

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sergeevaolga5

$(2a+b)(3a-4b)-6(a-b)^2=\\\\=6a^2+3ab-8ab-4b^2-6(a^2-2ab+b^2)=\\\\=6a^2-5ab-4b^2-6a^2+12ab-6b^2=\\\\=-10b^2+7ab\\\\\\(-2x^2y)^3*(-4x^3y)^2=(-2)^3x^{2*3}y^3*(-4)^2x^{3*2}y^2=-8x^6y^3*16x^6y^2=\\\\=-128x^{6+6}y^{3+2}=-128x^{12}y^5$

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2 uprostite vyrazhenie 2a b 3a 4b 6 a b23 uprostite vyrazhe

reshite 1 zhelatelno na listochke srochno

4 razlozhite na mnozhiteli xyxzx 5 razlozhite na mnozhiteli 9a2b23ab

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