9x^4-x^2-12x-36 factorise it
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Answer:(2x+6)(4x+6)
Step-by-step explanation:9x^4-(x^2+12x+36)
9x^4-(x+6)^2
(3x^2)^2-(x+6)^2
(3x-x+6)(3x+x+6)
(2x+6)(4x+6)
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