Question

tim x biet

\(\left(7x-11\right)^3=2^5.5^2+200\)

minh can cach lam gappppppp ai nhanh minh tk luon

Answer 1

\(\left(7x-11\right)^3=2^5.5^2+200\)

=> \(\left(7x-11\right)^3=32.25+200\)

=>\(\left(7x-11\right)^3=800+200\)

=>\(\left(7x-11\right)^3=1000\)

=>\(\left(7x-11\right)^3=10^3\)

=> \(7x-11=10\)

=>\(7x=21\)

=>\(x=3\)

Vậy x = 3

Answer 2

\(\left(7x-11\right)^3=2^5\cdot5^2+200\)

\(\left(7x-11\right)^3=800+200\)

\(\left(7x-11\right)^3=1000\)

\(\left(7x-11\right)^3=10^3\)

\(\Rightarrow7x-11=10\)

\(7x=10+11\)

\(7x=21\)

\(x=21\div7\)

\(x=3\)

Answer 3

\(\left(7x-11\right)^3=2^5\cdot5^2+200\)

\(\left(7x-11\right)^3=32\cdot25+200\)

\(\left(7x-11\right)^3=1000\)

\(\left(7x-11\right)^3=10^3\)

\(7x-11=10\)

\(7x=21\)

\(x=3\)

Answer 4

\(\left(7x-11\right)^3=2^5.5^2+200\)

<=>\(\left(7x-11\right)^3=1000\)

<=>\(\left(7x-11\right).\left(7x-11\right).\left(7x-11\right)=10.10.10\)

<=>\(7x-11=10\)

<=>\(7x=21\)

<=>\(x=3\)

vậy \(x=3\)

Answer 5

\(\left(7x-11\right)^3=2^5+5^2+200\)

\(\Rightarrow\left(7x-11\right)^3=32.25+200\)

\(\Rightarrow\left(7x-11\right)^3=800+200\)

\(\Rightarrow\left(7x-11\right)^3=1000\)

\(\Rightarrow\left(7x-11\right)^3=10^3\)

\(\Rightarrow7x-11=10\)

\(\Rightarrow x=3\)

vậy...

kb nhek

Answer 6

(7x-11)³=2⁵.5²+200

(7x-11)³=1000

=>7x-11=10

=>7x=21

=>x=3

Answer 7

mình ko dài dòng chỉ 1 câu x=3

Answer 8

X+10/X+7