Question

Efectuati urm.calcule si reduceti termenii asemenea:
a)2x(3-2x)+(-x)^2(2x-3)+(-x)(x^2-2x+1)=
b)(18x^3+9x^2-3x):(-3x)+(24x^4-36x^5+72x^3):(12x^3)=
c)(18x^60-36x^40+99x^70):(-9x^30)=
d)(22x^n+1+36x^n+2-42x^n):(6x^n)=

Answer 1

a)2x(3-2x)+(-x)²(2x-3)+(-x)(x²-2x+1)=
=6x-4x²-2x³+3x²-x³+2x²-x=
=5x-3x³+x²=x(5-3x²+x)


b)(18x³+9x²-3x):(-3x)+(24x⁴-36x⁵+72x³):(12x³)=
=-6x²-3x+1+2x-3x²+6=
=-9x²-x+7

c)(18x⁶⁰-36x⁴⁰+99x⁷⁰):(-9x³⁰)=
=-2x³⁰+4x¹⁰-11x⁴⁰ =



d)(22x^n+1+36x^n+2-42x^n):(6x^n)=
=22/9x +36/9x²-42/9=
=22/9x +4x²-14/3