Answer:
see explanation
Step-by-step explanation:
(a)
4 × 4 = 4²
(b)
5 × 5 × 5 × 5 = 
(c)
3 × 7 × 7 × 7 × 7 = 3 × 
(d)
2 × 9 × 9 × 9 × 2 × 9 ← rearrange
= 2 × 2 × 9 × 9 × 9 × 9
= 2² × 
All digit of the number 12.34 are significant.
Answer: 5
Step-by-step explanation: y=f(x)=3
y=f-2=3
y=f=3+2
y=f=5
f=5
Answer:
3 × 3 × 3 × 3 × 3 × 3 = 3⁶
Multiplying factors with exponents means you can add the exponents.
So

A negative exponent becomes positive when you move it to the denominator, so: