Why did my wife leave me?

i don't have a nice car
i am boring
i'm not rich
all of the above

Statement: if two distinct planes intersect, then their intersection is a line. which geometry term does the statement represent? defined term postulate theorem undefined term

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

With alll of except for the 2 that i did already