Ak−2k2k-2k^2k−2k2Bk2+2k^2+2k2+2C2k−k22k-k^22k−k2Dk+2k+2k+2Answer: 2k−k22k-k^22k−k2 Read Explanation: 2k−k22k-k^22k−k2 Read more in App