Question

(x+3)(x-1)(1-x)=va rog.
frumos

Answer 1

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

~o sa inmultesc pe rand parantezele~

$(x+3)(x-1)= x^{2} -x+3x-3= x^{2} +2x-3$

$(x^{2} +2x-3)(1-x)= x^{2} - x^{3} +2x-2 x^{2} -3+3x$ =

$=- x^{3} - x^{2} +5x-3$

$(x+3)(x-1)(1-x)=(x+3)-(x-1) ^{2} =- x^{3} - x^{2} +5x-3$