HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))25-( 49- ( 23.17-23.14))
(x-1)2=225
Mà : 152=225; (-15)2=225
=>(x-1)2=152 hoặc (x-1)2= (-15)2
=> x-1=15 hoặc x-1= -15
=>x=16 hoặc x=-14
Dịch từ sang tiếng anh:
+ Đông Nam Á
+ Nam Á
+ Sơn nguyên
+ Cao nguyên
1 + 2 + 8 + 9 + 1 + 2 + 8 + 9 + 10 + 10
= (1 + 9) + (1 + 9) + (2 + 8) + (2 + 8) + 10 + 10
= 10 + 10 + 10 + 10 + 10 + 10
= 60