题目

化简求值：(1－4y)(1＋4y)＋(1＋4y)2，其中y＝. 答案：原式＝1－16y2＋(1＋8y＋16y2) ＝1－16y2＋1＋8y＋16y2＝2＋8y， 当y＝时，原式＝2＋8×＝2＋＝. Look at the ______ pandas. They are eating bamboo.A. white and black’s B. orange and whiteC. black-and-white D. white-black