Question

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Answer 1

A. (x+5)

Explanation:

We are given a quadratic expression
`x^2+8x+15` which we will factorize to see which of the given options is a binomial factor of it.

`x^2+8x+15`

Finding the factors of 15 such that when added, they give a result of 8.

`x^2+3x+5x+15\\\\x(x+3)+5(x+3)\\\\(x+3)(x+5)`

Therefore, we can see that
`(x+5)` is that binomial factor that is present in the given options so option A. (x+5) is the correct answer.