`(7x-11)^3=10000`
`=>7x-11=\root[3]{10000}`
`=>7x=11+\root[3]{10000}`
`=>x=[11+\root[3]{10000}]/7`
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`(7x-11)^3=10000`
`=>7x-11=\root[3]{10000}`
`=>7x=11+\root[3]{10000}`
`=>x=[11+\root[3]{10000}]/7`
Tìm x biết (7x-11)^3=3.(7x-11)^2
tìm x biết (7x- 11).(7x- 11).(7x- 11)=2.2.2.2.2.5.5+20
help mình nha
(7x - 11)3= 100
1. 6x+x=5^11:5^9+3
2. 7x-x=5^21:5^19+3x4-1
3. 7x-2x=6^17:6^15+44:11
(7x-11)^3=(-3)^2x15+208
(7x-11)^3=(-3)^2*15+2^8
(7x - 11)3 = 25. 52 + 2.102
(7x - 11)^3 = 2^5.2^3+200
Bài 1:Tìm x
a) 5x+x=39-3^11:3^9
b) 7x-x=5^21:5^19+3.2^2-7^0
c) 7x-2x =6^17:6^15+44:11