Math Problem? Help Please?

Question

The base of a triangle is 8 cm greater than the height. The area is 24 cm^2. Find the height and the lenght of the base.

The height of the triangle is __ cm.

The base of the triangle is __ cm.

Subtract.

(xy - ab -7) - (xy - 6ab - 6)

The answer is __ ab - __

Answer 1

1/2 (x+8)x =24

x^2 +8x =48

x^2 +8x -48=0

(x+12)(x-4) =0

x=4

base =12cm

height = 4 cm

xy -ab -7 -xy +6ab +6 =5ab -1