Ta có:(7x-11)3=25 * 52 + 200
=> (7x-11)3=32 * 25 + 200
=> (7x-11)3=800 + 200
=> (7x-11)3=1000 = 103
=> 7x-11 = 10
=> 7x = 21
=> x = 3
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Ta có:(7x-11)3=25 * 52 + 200
=> (7x-11)3=32 * 25 + 200
=> (7x-11)3=800 + 200
=> (7x-11)3=1000 = 103
=> 7x-11 = 10
=> 7x = 21
=> x = 3
(5+x)^2-36=0
(7x-11)^3=2^5+5^2+200
(7x -11)^3 =2^5 +5^2+200
(7x-11)^3=2^5*5^2+200
(7x - 11) mũ 3 = 2 mũ 5 x 5 mũ 5 + 200
Tìm x biết : ( 7x - 11 )^3 = 2^5 . 5^2 + 200
( 7x - 11 )3 = 25 × 52 + 200
(7x-11)3=25.52+200
(7x-11)3=25.52+200
(7x - 11)3=25.52+200