Question

Expand (x +2) (9 - x)

Answer 1

x^2-7x-18

Explanation:

Verified Khan Academy Answer

Answer 2

-x²+7x+18

Explanation:

(x+2) (9-x).

x(9-x)+2(9-x)

9x-x²+ 18-2x

9x-2x-x²+18

7x-x²+18

-x²+7x+18