求各位一定老师为我解决这几题!化简：(x-2)²·(2-x)³·(x-2)计算：(m-n)³·(n-m)^4·(m-n)^5计算(-2)^50+(-2)^51化简：(x-y)²·[(y-x)³]³

Question

求各位一定老师为我解决这几题!
化简：(x-2)²·(2-x)³·(x-2) 计算：(m-n)³·(n-m)^4·(m-n)^5
计算(-2)^50+(-2)^51 化简：(x-y)²·[(y-x)³]³

Answer 1

(x-2)²·(2-x)³·(x-2)
=-(x-2)³(x-2)²·(x-2)
=-(x-2)^6

(m-n)³·(n-m)^4·(m-n)^5
=(m-n)³·(m-n)^4·(m-n)^5
=(m-n)^12

(-2)^50+(-2)^51
=2^50-2^51
=2^50-2*2^50
=-2^50

(x-y)²·[(y-x)³]³
=(y-x)²·(y-x)^9
=(y-x)^11