Simplify: 200 x 200 - 150 x 150  Choose one
A) 761200	B) 761400	C) 761800	D) 17500	E) None of them
(200)^2 - (150)^2 = (200 + 150) (200 - 150) = 350 x 50 = 17500.   Answer is 17500
<result>D</result>
Simplify: 200 x 200 - 150 x 150