(0,5a-0,6b+5..5a+0.4b)+(1.3b-4.5)= (1-x+4 x^{2} - вопрос №7177929050655041345142832326 от maratis2007 24.12.2020 11:16

Question

Алгебра: (0,5a-0,6b+5..5a+0.4b)+(1.3b-4.5)= (1-x+4 x^{2} -8 x^{3} )+(2 x^{3}+ x^{2} -6x- x^{3} +8 x^{2} )= решить

maratis2007 · Answer

(0.5a-0.6b+5.5)-(-0.5a+0.4b)+(1.3b-4.5)=0.5a-0.6b+5.5+0.5a-0.4b+1.3b-4.5= 1a+0.1b+1(1-x+4x^2-8x^3)+(2x^3+x^2-6x-3)-(5x^3+8x^2)=1-x+4x^2-8x^3+2x^3+x^2-6x-3-5x^3-8x^2=-2-7x-3x^2-11x^3...