Question

sumas y restas de polinomios

(26x³-45+28x-12x²)+(34-16x+25x²-11x³)=

(45x³+26x²-24x)-(36x³+26x²+35x)=

(24x-13x³+9x²+7)+(36x²+17x³-18x-35)=

(5mn²-14m²n+17m³)-(8mn²-6m²n-12m³)=

ayudenme porfavor es para mi examen parcial;c​

Answer 1

1)

$(26x^3-45+28x-12x^2)+(34-16x+25x^2-11x^3)=\\\\26x^3-45+28x-12x^2+34-16x+25x^2-11x^3=\\\\(26-11)x^3+(-12+25)x^2+(28-16)x+(-45+34)=\\\\15x^3+13x^2+12x-11$

2)

$(45x^3+26x^2-24x)-(36x^3+26x^2+35x)=\\\\45x^3+26x^2-24x-36x^3-26x^2-35x=\\\\(45-36)x^3+(26-26)x^2+(-24-35)x=\\\\81x^3-59x$

3)

$(24x-13x^3+9x^2+7)+(36x^2+17x^3-18x-35)=\\\\24x-13x^3+9x^2+7+36x^2+17x^3-18x-35=\\\\(-13+17)x^3+(9+36)x^2+(24-18)x+(7-35)=\\\\4x^3+45x^2+6x-28$

4)

$(5mn^2-14m^2n+17m^3)-(8mn^2-6m^2n-12m^3)=\\\\5mn^2-14m^2n+17m^3-8mn^2+6m^2n+12m^3=\\\\(5-8)mn^2+(-14+6)m^2n+(17+12)m^3=\\\\-3mn^2-8m^2n+29m^3$