One of the factors of x^2−2x−15 is _. A. x+3 B. x-3 C. x+5 D. x - 15

Armani Vang

Armani Vang

Answered question

2023-02-14

One of the factors of x 2 2 x 15 is _____. A. x+3 B. x-3 C. x+5 D. x - 15

Answer & Explanation

Miracle Hurley

Miracle Hurley

Beginner2023-02-15Added 9 answers


The given expression is
x 2 2 x 15
We have to split the middle term in such a way the sum is -2 and product is -15 , which can be done in following way
= x 2 5 x + 3 x 15 = x ( x 5 ) + 3 ( x 5 )
= ( x + 3 ) ( x 5 )
So, x+3 is one of the factors of the given expression.

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