Question

若m+3与2m-6是同一个数的平方根,求这个数

Answer 1

m+3与2m-6是同一个数的平方根，所以
m+3=-（2m-6）
m+3+2m-6=0
m=1

Answer 2

(m + 3) + (2m - 6) = 0
==> 3m - 3 = 0
==> 3m = 3
==> m = 1

(1 + 3)^2 = 4^2 = 16

Answer 3

m+3=-(2m-6)
3m-3=0
m=1
(m+3)�0�5=4�0�5=16
答：这个数是16。

Answer 4

m+3=-2m+6
3m=3，m=1