20. A square with sides 1 inch long is (20,91) divided into 2-by-2-inch rectangles,
(a) What is the
of each
2-by-2-in, rectangle?
(b) What fraction of the square is
shaded?

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.