( 169 - 42 ).( 169 - 52 ).( 169 - 62 )........( 169 - 142 ).( 169 - 152 )
= ( 132 - 42 ).( 132 - 52 ).( 132 - 62 )........( 132 - 132 ).( 132 - 142 ).( 132 - 152 )
= ( 132 - 42 ).( 132 - 52 ).( 132 - 62 ) ........0.( 132 - 142 ).( 132 - 152 )
= 0
( 169 - 42 ).( 169 - 52 ).( 169 - 62 )........( 169 - 142 ).( 169 - 152 )
= ( 132 - 42 ).( 132 - 52 ).( 132 - 62 )........( 132 - 132 ).( 132 - 142 ).( 132 - 152 )
= ( 132 - 42 ).( 132 - 52 ).( 132 - 62 ) ........0.( 132 - 142 ).( 132 - 152 )
= 0
Tính
E=(169-4^2).(169-5^2).(169-6^2).(169-7^2).(169-8^2).(169-9^20).(169-10^2).(169-11^2).(169-12^2).(169-13^2)
b/ ( 169-1).( 169-2^2).( 169-3^2)…(169-12^2).(169-13^2)
b) ( 169 - 1 ) . ( 169 - 3 mũ 2 ) ....... ( 169 - 12 mũ 2 ) . ( 169 - 13 mũ 2 )
Tính giá trị của biểu thức:
A= (169-1.1) .(169-2.2) .(169-3.3)....(169-20.20)
Giúp mjk vs mjk đang cần gấp!!!!
(169-1^2)×(169-2^2)×(169-3^2)......(169-100^2)
Tính hợp lý:(169-1.1).(169-2.2). ... .(169-23.23)
Tính : (169 - 4^2) . (169 - 5^2) ... (169 - 13^2)
(169 - 4 mũ 2) (169 -5 mũ 2) ...( 169 - 13 mũ 2)
tinh nhanh
S= -(169-1^2).(169-2^2)......(169-100^2)