1 would be B. 2 would be a
Step-by-step explanation:
(1\2)^4 x 1\16 x 1\8 x 1\4 [1/2^4=16]
1/16 x 1/512
=>1/2048
Example...
4^x = 16
log(4^x) = log(16)
x*log(4) = log(16)
x = log(16) / log(4)
When you subtract flip the signs of the second set.
2x^2+5-4x+3
Now combine like terms
2x^2-4x+8
Final answer: B
If you would like to simplify 6 * (-5), you can do this using the following steps:
6 * (-5) = - (6 * 5) = - 30
The correct result would be - 30.