Question

Coroana +60 p
(X-1)(x+1)(x+3)=
(X^4+x-1)(x^2+2)=
(-x^4+1)(-3x^2+2)=
(3x+1)(1-x^2)(2-x)=

Answer 1

(x-1)(x+1)(x+3)=(x²-1)(x+3)=x³+3x²-x-3

(x⁴+x-1)(x²+2)=x⁴(x²+2)+x(x²+2) -1(x²+2) =x⁶+2x⁴+x³+2x-x²-2=x⁶+2x⁴+x³-x²+2x-2

(-x⁴+1)(-3x²+2)= - x⁴(-3x²+2) +1(-3x²+2)= 3x⁶ -2x⁴ - 3x²+2

 (3x+1)(1-x²)(2-x)=(3x- 3x³+1-x²)(2-x)=6x-3x²-6x³+3x⁴+2-x-2x²+x³=
= 3x⁴-5x³-5x²+5x+2

Sper că te-am ajutat!