How do you write $d^2+3d-54$ in factored form?

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Answer 1 · 2018-06-15T01:56:47

$color(maroon)(=>(d-6) * (d + 9)$

3d^2 + 3d - 54#

$=> d^2 + 9d - 6d - 54, "splitting the middle term"$

$d(d+9) - 6 (d + 9)$

$color(maroon)(=>(d-6) * (d + 9)$

How do you write d^2+3d-54d^2+3d-54 in factored form?