Answer:
+6x-16
Step-by-step explanation:
(x+8)(x+−2)
=(x)(x)+(x)(−2)+(8)(x)+(8)(−2)
=x^2−2x+8x−16
=x^2+6x−16
Those expressions are already in scientific notation.
Step-by-step explanation:
The scientific notation:

<em>1 ≤ a < 10</em> and <em>k -</em><em> any integer number</em>
<em />

I think the answer is 4 different possibility's.