5: Any number (besides zero) to the power of zero is 1.
7: You can make the exponent positive by putting it in the denominator.
12: The (-8) and the 3 each have a negative exponent, so move both of them.
15: Only the factor with the negative exponent will move to the denominator.
21: Change each negative exponent to a positive exponent by changing whether it is in the numerator or the denominator.
26: Add the exponents.
27: This is p6 × p6 × p6 × p6.
28: You can multiply the exponents before changing the negative.
30: -7 is (-7)1.
32: Add exponents to multiply, and subtract them to divide.
36: When dividing powers, the exponents are subtracted rather than divided.
39: The numerator and denominator each have a negative exponent, so they both move (that is, the whole fraction gets flipped).
42: -5 and p3 each need to be raised to the third power.
59: 8 is 23.
70: The √ symbol means the positive square root.
72: Take the square root of the numerator and the square root of the denominator.