Question

sendo a=4x²+3x²+2x, b=-5x³-x e c=x³-x, calcule a+b+c

Answer 1

$A= 4x^{2} +3x^{2} + 2x$

$B= -5x^{3} -x$

$C=x^{3} - x$


A+B+C=

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

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

$-4x^{3} +7x^{2}$