F(x)=x^2+4x-21 find the x intercepts

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Which expression will have the same sum as 3_8 + 1/4?

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps