8-4 is equivalent to 0.000244140625.
I assume you mean the last digit. The idea is to find a pattern: 8 to the power 1 ends with 8 8 to the power 2 ends with 4 8 to the power 3 ends with 2 (to figure this out, I just multiplied 4 x 8) 8 to the power 4 ends with 6 (once again, multiply the last digit of the previous power x 8) 8 to the power 5 ends with 8 8 to the power 6 ends with 4 ... As you can see, it all repeats, with a period of 4. Therefore, any exponent that is a multiple of 4 will end with 6. Find the nearest multiple of 4 that is smaller than 2015, then continue calculating - always with the last digit.
4096
4^8 / 4^6 is equal to 16.
4^2 * 4^8= 16 * 65,536 = 1,048,576
It is: 8^4 times 8^5 = 134217728
8 to the power (2/3) equals 4.
4 to the fourth power times 8 to the ninth power = 34,359,738,368
8^4 = 8*8*8*8 = 4096
8-4 is equivalent to 0.000244140625.
I assume you mean the last digit. The idea is to find a pattern: 8 to the power 1 ends with 8 8 to the power 2 ends with 4 8 to the power 3 ends with 2 (to figure this out, I just multiplied 4 x 8) 8 to the power 4 ends with 6 (once again, multiply the last digit of the previous power x 8) 8 to the power 5 ends with 8 8 to the power 6 ends with 4 ... As you can see, it all repeats, with a period of 4. Therefore, any exponent that is a multiple of 4 will end with 6. Find the nearest multiple of 4 that is smaller than 2015, then continue calculating - always with the last digit.
4096
4096
4^8 / 4^6 is equal to 16.
It is 4^8 which means 4 to the power of 8
-8 ^ 4 = -8 * -8 * -8 * -8 = 4,096
8^4 = 4096.