Question

x³-2x²-x+2 ajutorrrrrrrrr​

Answer 1

Răspuns:

Explicație pas cu pas:

$\displaystyle x^3-2x^2-x+2=x^2(x-2)-(x-2)=(x-2)(x^2-1)=\\=(x-2)(x-1)(x+1)$

Answer 2

x³-2x²-x+2→x³-2x²-x+2 => x²(x-2)-1(x-2) => (x²-1)(x-2)=> (x²-1²)(x-2) =>

Asta e form (a²-b² = (a+b)(a-b))

=> (x+1)(x-1)(x-2) =>(x+1)(x-1)(x-2)