Question

1) TÌM X E Z 

a) 37 - ( x - 25 ) = x + 14

b) 11 - (x - 3)² =0

Answer 1

a) \(37-\left(x-25\right)=x+14\)

\(\Leftrightarrow\)\(37-x+25=x+14\)

\(\Leftrightarrow\)\(x+x=37+25-14\)

\(\Leftrightarrow\)\(2x=48\)

\(\Rightarrow\)\(x=\frac{48}{2}=24\)

Vậy \(x=24\)

b) \(11-\left(x-3\right)^2=0\)

\(\Leftrightarrow\)\(\left(x-3\right)^2=11-0=11\)

\(\Leftrightarrow\)\(x-3=\sqrt{11}\)

\(\Rightarrow\)\(x=\sqrt{11}+3\)

Vậy \(x=\sqrt{11}+3\)