x^3 + 2x^2 - 19x - 20 > 20

x^3 + 2x^2 - 19x - 20 > 0

Step 1) The polynomial x^3 + 2x^2 -19x - 20 > 20

x^3 + 2x^2 -19x -20 > 0

y > 20

A simple choice is (0, 0)

(0)^3 + 2(0)^2 -19(0) -20 > 0

-20 > 0

The above statement is false, so shade the region except containing (0,0).

y > 20

A simple choice is (0,0)

0 > 20

The above statement is false, so shade the region except containing (0,0).

Solution of the inequality is shaded in light purple colour.