(x-4)-(2x+5) best answer

Simplified the expression.

(x - 4) - (2x + 5) = x - 4 - 2x - 5
x - 4 - 2x - 5 = x - 2x - 4 - 5
x - 2x - 4 - 5 = -x - 9

(x-4)-2x-5 remember the minus sign before the parenthesis changes the signs inside the parenthesis.
x-2x-4-5 now you put the Xs together and you get
-x-9

2xsquared+5x-20

-x-9
Welcome (:

-9-x

-2x^2+3x+20

this is the correct one!!! others are wrong :)