Answer:
8 up
Step-by-step explanation:
If you write

, you'll notice this is really just a quadratic equation that can be factorized:

So you have

and
Answer:
12832
Step-by-step explanation:
16, since the inverse operation of subtraction is addition add 12 and 4.
Answer:
so that you will multiply 15 * 4.
Step-by-step explanation:
15*4 = 60 now you divide 60 by 4 and the answer will be 15.