Question

The value of minus 1 + root 3 I cube is

Answer 1

Answer:

Dosen’t need a calculator, you can also know the value of root 3. First 1^2=1, too small, 2^2=4, too big. So 1<root 3<2. Next, (1.1)^2 is 1.21, (1.2)=1.44, (1.3)^2=1.69, (1.4)^2=1.96, all are too small, continue (1.7)^2=2.89 too small and (1.8)^2=3.24 so 1.7<root 3<1.8. (1.71)^2= 2.9241, (1.72)^2=2.9584 and (1.73)^2=2.9929 (1.74)^2= 3.0276. So, 1.73< root 3 < 1.74.