To find the zeros of this equation you need to first set it equal to zero
2x2 + 16x - 9 = 0
But since you can't FOIL this equation you need to move the non-variable number over
2x2 +16x = 9
Now solve for x by pulling an x out of the equation
x(2x + 16) = 9
x = 9
2x +16 = 9
2x = -7
x = -7/2
So your zeros would be at x = 9, and -7/2
The Gcf is finding the greatest numbers the lcm is finding the least factor
and the are the same because your finding the common number> (means same number)
Area = length x width
180 = L x 15
L = 180/15
Length = 12 feet
Pretty sure its 36 (not sure) i keep getting 36.6 cm