What are the binomial factors of $x^2+8x+15$ ?

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Answer 1 · 2016-11-08T08:21:45

$x^2+8x+15=(x+5)(x+3)$

Trinomials have the form:

$ax^2+bx+c$

When factoring trinomials where $a=1$ , we look for numbers, $n, m$ where:

$nxxm=c, n+m=b$

In this case, we can use $5, 3$ as those numbers:

$x^2+8x+15=(x+5)(x+3)$

What are the binomial factors of x^2+8x+15x^2+8x+15?