All you have to do is write a positive number. let's say 4, then write a positive exponent (that's the tiny number in the right corner of the regular number) and then just write a positive exponent less than 4.
So 4 squared
Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:
Solve

For x=-1/2 and y=-3
substitute the value of x and the value of y in the expression above

Remember that

so

Convert to mixed number

Answer:
I got 0.3428571429
Step-by-step explanation:
I got it by inputting (2/5)*(6/7) into my calculator, but if you need more let me know
2 divided by 18 is 9 and 3 divided by 18 is 6 hope that helps