Option d:
is the correct answer.
Explanation:
The expression is 
We need to simplify the expression, using the product of powers.
The product of powers states that "when multiplying two powers with the same base the exponent values can be added up".
Thus, grouping the same base and adding the exponent values from the expression
, we have,

Adding the exponent, we get,

Thus, the simplified expression is 
Hence, Option d is the correct answer.
Assuming that you were to simplify this, you'd get 2n + 7n + 8 = 9n + 8.
Where’s the photo to this question?
A^2 + b^2 = c^2
C is your hypotenuse or the longest side of the triangle; you plug in your values and solve for the missing side:
15^2 + b^2 = 17^2
225 + b^2 = 289
*-225 on both sides to get b by itself*
B^2 = 64
*to get rid of the ^2; you take the square root*
B = sqrt 64
B= 8 <— final answer