-3x^2-2x (+-)6=0
ax^2+bx+c
a=-3
b=-2
c= either positive or negative 6 (there is no plus or minus in your question.)
What are the answer choices? It might help.
Since the shower block is in the form of a rectangle. The shower block has an area of 144
. It has a length of 24m. We need to calculate the width of the shower block.
Area of rectangular shower block = length
width
144
= 24 m
width
width = 
width = 6m
So, the width of the shower block is 6 meters.
23(3) + 3
= 72
Why do you write 2 equations?