Question

xXx +18=82

Answer 1

xxx + 18 = 82

xxx=82 - 18 

xxx = 64

Answer 2

2x  = 82 -18

2x  = 64

x    = 32 

Vậy x = 32

Answer 3

Ta có :\(x\times x+18=82\)

\(\Rightarrow x\times x=82-18=64\)

Do \(64=\left(-8\right)^2=8^2\)

\(\Rightarrow x=8\)hoặc \(x=-8\)

Answer 4

XxX=82-18

XxX=64

x=8