Latest exam Aptitude Question SOLUTION: perform the indicated operations (9x^4+3xy-y^3)-(x^4+7xy+ey^3) a. 9x^4-4xy-4y^3 b. 10x^4+12xy+2y^3 c. 8x^4-4xy-4y^3 d. 8x^4-4xy-2y^3