I need help please!

y^2+2y−48

=y^2+8y−6y−48

=y(y+8)−6(y+8)

=(y+8)(y−6)

∴y^2+2y−48=(y+8)(y−6).

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.