Question

Determine a simplified expression for the shaded area

Answer 1

11x

Explanation:

Answer 2

4x^2-3x

Explanation:

3x(2x+5) = 6x^2+15x

2x(x+9) = 2x^2+18x

(6x^2+15x)-(2x^2+18x) = 4x^2-3x