Question

a, ( x-2)⁵=243

b, (x+1)³=125

Tìm x

Answer 1

a) \(\left(x-2\right)^5=243\)

\(\left(x-2\right)^5=3^5\)

\(\Rightarrow x-2=3\)

\(\Rightarrow x=5\)

vay \(x=5\)

b) \(\left(x+1\right)^3=125\)

\(\left(x+1\right)^3=5^3\)

\(\Rightarrow x+1=5\)

\(\Rightarrow x=4\)

vay \(x=4\)

Answer 2

a) x=5

b) x=4

Answer 3

a, (x-2)⁵=243

=> (x-2)⁵=3⁵

=> x-2=3

=> x=5

b, (x+1)³=125

=> (x+1)³=5³

=> x+1=5

=> x=4