the area of a triangle is given by the expression 18x squared. the base of the triangle is represented by 4x. the height of the triangle in

Now I've introduced a mistake.

The last two times I wrote 4x it should read "2x", so correcting that now:

area = 18x

        = 2x · height

⇔ 18x = 2x · height

∴ height = ....................

area of triangle= ½ base · height

                         =½ (4x) · height

                         = 2x · height

∴ height = ........ 

oops, I didn't finish what I was doing ...

area = 18x

        = 4x · height

⇔ 18x = 4x · height

∴ height =

one final correction 

I should have written that area 18x as 18x²