02Jan

номер 138. там 4 примера

katia0603 Алгебра 1 0

номер 138. там 4 примера

Posted by katia0603 | Posted at Jan 02, 2014 | Categories: Алгебра

Answers

rudichek
rudichek

1) [latex] m^{3} -m-a m^{2} +a=m( m^{2} -1)-a( m^{2} -1)=(m-a)( m^{2} -1) [/latex] 2) [latex]ay-2ab+2by- y^{2} =a(y-2b)+y(2b-y)=(a-y)(y-2b)[/latex] 3) [latex] x^{2} +4yz-xy-4xz=x(x-4z)-y(-4z+x)=(x-y)(x-4z)[/latex] 4) [latex]a y^{2} +2 a^{2} - a^{3}-2 y^{2} = y^{2}(a-2)+a^{2}(2-a)=(y^{2}-a^{2})(a-2)[/latex]

Jan 03, 2014 00:29

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