Question

алгебра аааапппааввапп

Answer 1

$(2x+1)*(x-1) \2 x^{2} -2x+x-1 \2 x^{2} -x-1 \---------------------- \(3-y ^{2} )*(y-4) \3y-12y^{3}+4y^{2} \-y^{3}+4y^{2} +3y \--------------------- \ (b-1)*(b^{2} +b-2 \b^{3}+b^{2} -2b-b^{2} -b+2 \b^{3}-3b+2$
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   $a^{2} (2-a)*(a+5) \a^{2} +2a+10-a^{2} -5a \-3a+10$