Test: Indices - Ambitious

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Question 1:   Simplify: x 3 x 4
x 12
x 1
x 7
3 x 4
Question 2:   Simplify: x 7 ÷ x 5
x 7/5
x 2
x 12
x 2
Question 3:   Simplify: x 2 x 3 x 4 x 5 x 6
x 22
x 20
x 18
x 8
Question 4:   Simplify: ( x 8 x 3 x 2 ) 2
x 14
x 9
x 25
x 49
Question 5:   Simplify: ( 0.72 ) 0 + 2 4 + 9 1 2 16 1 4
2 15 16
2
2 13 16
2 1 16
Question 6:   Simplify: 8 1 100
12.5
80
125
800
Question 7:   Simplify: 16 2 8
2
1
4
2
Question 8:   Simplify: 4 1 100+ 4 1 2 100+ 4 1 2 100
150
175
275
200
Question 9:   If 3 x =81 , find x .
x=9
x=27
x=3
x=4
Question 10:   If 7 x2 = 49 2x+5
x=3
x=2
x=1
x=4