Question

( x4+x2+2 )-( x3-2x2-5x+6 )

Answer 1

La respuesta es 12x-4

Answer 2

$( x^{4} +x^{2} +2) - ( x^{3} -2 x^{2} -5x +6)$

$x^{4} + x^{2} +2 - x^{3} +2x^{2} +5x -6$

$x^{4} - x^{3}+3 x^{2}+5x - 4$