Answers

2016-07-24T18:11:17+08:00
I'm not sure if this is what you mean but yeah:
area of parallelogram = base * height
but since base yung hinahanap:
base = area of parallelogram / height
21x^2+22x-8 / 3x+4
(simplify 21x^2 + 22x -8 = (7x + 2) (3x + 4))
(7x + 2) (3x + 4) / 3x + 4 
(cancel both 3x+4; 7x + 2 will be left)
base = 7x + 2
1 4 1
sorryyyy i mean 7x - 2 ***correction***