Algebra question first to get it gets the points.??

Question

Factor: by grouping.

-2y^2+y+2x-4xy

Answer 1

-2y^2+y+2x-4xy=

y (-2y +1) + 2x( 1- 2y)=  note: (-2y +1) == (1-2y)

so grouping them together yields:

(y+2x) (1-2y)

Answer 2

(-2y+1)(y+2x)

Answer 3

Here's the right answer

-2y^2 + y + 2x - 4xy

= y - 2y^2 + 2x - 4xy

= y (1 - 2y) + 2x (1 - 2y)

= (y + 2x)(1 - 2y)

Answer 4

4y^2+-2X

Answer 5

-2y^2 + y + 2x - 4xy

= -2y^2 + y - 4xy + 2x

= (-2y^2 + y) - (4xy - 2x)

= -y(2y - 1) - 2x(2y - 1)

= (2y - 1)(-y - 2x)

Answer 6

-2y^2 + y + 2x -4xy

= -2y^2 -4xy + y + 2x

= -2y(y+2x) + 1(y+2x)

=(y+2x)(1-2y)

There u go.