Answer :
√(68)=√(4*17)
Use this property:
√(a*b)=√(a)*√(b)
√(4*17)=√(4)*√(17)=2 * √(17)
Where:
√(17)≈4.21
So:
2 * √(17)≈ 8.25
8.25 is between 8 and 9 because:
8.25>8
and
8.25<9
8<8.25<9
√(68)=√(4*17)
Use this property:
√(a*b)=√(a)*√(b)
√(4*17)=√(4)*√(17)=2 * √(17)
Where:
√(17)≈4.21
So:
2 * √(17)≈ 8.25
8.25 is between 8 and 9 because:
8.25>8
and
8.25<9
8<8.25<9