If x = -5 and y = 8, what is the value of 2(x-y)^2 - xy ?
Choose the correct choice from the following choices
A) 358 B) 348 C) 368 D) 388 E) 378

Rationale: x = - 5 and y = 8 x - y = - 5 - 8 = - 13 x * y = - 5 * 8 = - 40 now we apply it in the equation 2 ( x - y ) ^ 2 - xy = 2 ( - 13 ) ^ 2 - ( - 40 ) = = > 2 * 169 + 40 = 338 + 40 = 378 answer : e
Answer: E