So to find the area you should draw a line to make a right triangle then take the area of the 3 figures and add them together. See the picture.
Any singular matrix (a matrix with zero determinant) has no inverse.
Answer:
I would say A. it makes the most sense.
To find the zeros set the factors on the numerator equal to zero and solve
(x - 1) = 0 x = 1
(x + 1) = 0 x = -1