Question

Calculati:
3(x-1)²-5(x-1)(x+1)+2(x+1)²

Answer 1

Sper ca te-am ajutat!

Answer 2

$3 {(x - 1)}^{2} -5 (x - 1)(x + 1) + 2 {(x + 1)}^{2} \\ 3( {x}^{2} - 2x +1) - 5( {x}^{2} - 1) + 2( {x}^{2} + 2x + 1 )\\ 3 {x}^{2} - 6x + 3 - 5{x}^{2} + 5 + 2 {x}^{2} + 4x + 2 \\ - 2x + 10$
La ultimul pas se reduc termenii asemenea