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Scoate factorul comun
5x-15y+10z
7x³+14x²-28x+42x⁴
Dau coroniță


Răspuns :

5x-15y+10z =5(x-3y+2z )
 7x³+14x²-28x+42x⁴
=7x(x²+2x-4+6x³)

5x-15y+10z=5(x-3y+2z)

7x^3+14x^2-28x+42x^4=
7x(x^2+2x-4+6x^3)