how do I factor this trinomial
x 2 + 13x + 36
answer: (x + 9) (x + 4)
x² + 13x + 36
\( x^ 2 + 13x + 36\\=x^2+9x+4x+36\\=x(x+9)+4(x+9)\)
\(=(x+9)(x+4)\)
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