Question

-{-[x-(2x+y-z)-(3y+2-5x)] +[-(7x-2y)]-(2y-13x)}

{-ab^2+[-(3a^2b-5b^2+ 3ab^2)+(-2b^2+6Ab^2)]-(5ab^2+ 3b^2)}

ayuda con esos dos ejercicios plis ;-;​

Answer 1

Respuesta:

Explicación paso a paso:

-{-[x-(2x+y-z)-(3y+2-5x)] +[-(7x-2y)]-(2y-13x)}

=-{-[x-2x-y+z-3y-2+5x] +[-7x+2y]-2y+13x}

=-{-x+2x+y-z+3y+2-5x -7x+2y-2y+13x}

=x-2x-y+z-3y-2+5x+7x-2y+2y-13x

=-2x-4y+z-2

_______________________________

{-ab²+[-(3a²b-5b²+ 3ab²)+(-2b²+6ab²)]-(5ab²+ 3b²)}

={-ab²+[-3a²b+5b²- 3ab²-2b²+6ab²]-5ab²- 3b²}

={-ab²+[-3a²b+5b²- 3ab²-2b²+6ab²]-5ab²- 3b²}

={-ab²-3a²b+5b²- 3ab²-2b²+6ab²-5ab²- 3b²}

= -3a²b-3ab²