Let's simplify the expression step by step:
First, distribute the negative sign before the second set of parentheses(2x^2 + 4x - 2y) - (5y - 7x) + (-3x^2 + 5x= 2x^2 + 4x - 2y - 5y + 7x - 3x^2 + 5x
Combine like terms= (2x^2 - 3x^2) + (4x + 7x + 5x) + (-2y - 5y= -x^2 + 16x - 7y
Therefore, the simplified expression is -x^2 + 16x - 7y.
Let's simplify the expression step by step:
First, distribute the negative sign before the second set of parentheses
(2x^2 + 4x - 2y) - (5y - 7x) + (-3x^2 + 5x
= 2x^2 + 4x - 2y - 5y + 7x - 3x^2 + 5x
Combine like terms
= (2x^2 - 3x^2) + (4x + 7x + 5x) + (-2y - 5y
= -x^2 + 16x - 7y
Therefore, the simplified expression is -x^2 + 16x - 7y.