Упростить!!! [tex](-3 r^{2} +2rs+ 5 s^{2} )(-2rs- s^{2} )[/tex]. Created by tirelessly. algebra-ru

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irinan2014

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Раскрываем скобки,приводим подобные...

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АннаАрт не все подобные приведены!

АннаАрт $(-3r^2+2rs+5s^2)*(-2rs-s^2)=\\\\
=(-3r^2)*(-2rs)+2rs*(-2rs)+5s^2*(-2rs)+\\+(-3r^2)*(-s^2)+2rs*(-s^2)+5s^2*(-s^2)=\\\\
=6r^3s-4r^2s^2-10rs^3+3r^2s^2-2rs^3-5s^4=\\\\
=6r^3s-r^2s^2-12rs^3-5s^4$

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