Verified Answer :

the answer is D on edge \i just took the test

Cetacea

Answer:  Last option. (attached image)

We factor 8 so that the sum of the factors = 9

Such factors are 8 and 1.

\(x^2+9x+8\\=x^2+8x+x+8\\=x(x+8)+1(x+8)\\=(x+1)(x+8)\)

Only the last option shows that.

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