If using the method of completing the square to solve the quadratic equation x2 + 20x - 6 = 0, which number would have to be added to "complete the square"? WWW Submit Answer attempt 1 out of e / problem 1 out of max 1

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2