1 2/3 sqrt(0.64) = 2/3 0.8 = 0.53332 x^2 - 14 = 2x^2 - 24x^2 - 2x^2 = -24 + 14-x^2 = -10x^2 = 10x = ±√103 √53 is between √49 = 7 and √64 = 8, so -√53 is between -8 and -7.
1 2/3 sqrt(0.64) = 2/3 0.8 = 0.5333
2 x^2 - 14 = 2x^2 - 24
x^2 - 2x^2 = -24 + 14
-x^2 = -10
x^2 = 10
x = ±√10
3 √53 is between √49 = 7 and √64 = 8, so -√53 is between -8 and -7.