Question

which expression is equivalent to 2x²+(4x - 6x²)+9-(6x + 3)? f -4x²-2x + 12 g -4x²-2x + 6 h -10x + 6 j 18x + 12

Explanation:

Step1: Eliminar paréntesis

$2x^{2}+4x - 6x^{2}+9 - 6x - 3$

Step2: Combinar términos semejantes de $x^{2}$

$(2x^{2}-6x^{2})+4x - 6x+(9 - 3)$
$=-4x^{2}+4x - 6x + 6$

Step3: Combinar términos semejantes de $x$

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

Answer:

G. $-4x^{2}-2x + 6$