Question

por favor ayúdenmeee ​

Answer 1

Explicación paso a paso:

a)

$2x^{3} +3x^{2} +4 +4x^{3} + 2x^{2} +3\\2x^{3} +4x^{3} +3x^{2} +2x^{2} +4+3\\6x^{3} +5x^{2} +7$

b)

$y^{2} +6y^{3} -8 -(2y^{4} -3y^{2} +6y)\\y^{2} +6y^{3} -8-2y^{4} +3y^{2} -6y\\-2y^{4} +6y^{3}+3y^{2}+y^{2}-6y-8\\-2y^{4} +6y^{3}+4y^{2}-6y-8$