Question

A)2x(-5)-3(x do potengi 2 -2x)+(x-2)x= B)a(a+b+c)-b(a-b+c)-c(a-b-c)= C) x(x do potengi 2 +2x+1)-(-4x do potergi 3 +8x do potengi 2-6):2=

Answer 1

a) 2x(-5)-3(x*-2x)+(x+2) = -10x-3x*+6x+x+2x= -x-3x*

b) a(a+b+c)-b(a-b+c)-c(a-b-c)= a* + ab + ac -ab +b* - bc -ac + bc + c* = a*+b*+c*

Answer 2

A)2x(-5)-3(x do potengi 2 -2x)+(x-2)x= 2x-5-3x^2+6x+x^2-2x=-2x^2+6x-5

 

B)a(a+b+c)-b(a-b+c)-c(a-b-c)=a^2+ab+ac-ba-b^2-bc-ca+cb-c^2=a^2-B^2-c^2

 

C) x(x do potengi 2 +2x+1)-(-4x do potergi 3 +8x do potengi 2-6):2=x^3+2x^2+x-(-4x^3+8x^2-6);2=x^3+2x^2+x+2x^3-4x^2+3=3x^3-2x^2+x-3

 

 

^ozn potege