Question

Ayuda porfavor! El resultado de la a es correcto? Si no lo es, mostrar procedimiento porfavor.

Answer 1

-y³+5y-1-(-7y²+8y)

= -y³+5y-1+7y²-8y

=-y³+7y²+5y-8y-1

=-y³+7y²-3y-1

=-1(-y³+7y²-3y-1)

=y³-7y²+3y+1)

Explicación paso a paso:

-y³+5y-1-(-7y²+8y)

= -y³+5y-1+7y²-8y

=-y³+7y²+5y-8y-1

=-y³+7y²-3y-1

=-1(-y³+7y²-3y-1)

=y³-7y²+3y+1)