Question

Tìm số hữu tỉ (x-5/6)^2=1/36

Answer 1

Answer:

x = $\frac{2}{3}$ , x = 1

Step-by-step explanation:

(x - $\frac{5}{6}$ )² = $\frac{1}{36}$ ( take square root of both sides )

x - $\frac{5}{6}$ = ± $\sqrt{\frac{1}{36} }$ = ± $\frac{1}{6}$ ( add $\frac{5}{6}$ to both sides )

x = $\frac{5}{6}$ ± $\frac{1}{6}$ , then

x = $\frac{5}{6}$ - $\frac{1}{6}$ = $\frac{4}{6}$ = $\frac{2}{3}$

x = $\frac{5}{6}$ + $\frac{1}{6}$ = $\frac{6}{6}$ = 1