User Manual

- 7 -
Investigate 1
x
1
2
Y1 x=
x
1
3
Y2 x=
x
3
2
Y3 x=
x
2
3
Y4 x=
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
4
2
8
2
4
8
8
4
9
3
27
3
9
27
27
9
16
4
16
64
25
5
25
125
36
6
36
216
49
7
49
343
b. The square numbers give their square root when raised to the power a half.
c. Power a half is the same as square root
Summary: Power one third is cube root, so it makes sense that power
1
n
is the same as nth root.
Investigate 2
Explanation: The denominator of the power gives the root and the numerator raises the answer to that
power – these things can be done in either order.
Follow-up 2
a.
1
2
81 9=
b.
1
2
1
5
25
−

=


c.
1
2
25 5
64 8

=


d.
1
2
36 5
25 6
−

=


e.
2
3
125 25=
f.
2
3
125 36
216 25
−

=

