Verified answer

Presentation is incorrect and should be shown as:-

[ 20x³ / (x² - 3x - 18) ] [ (x² - 8x + 12) / (4x²) ]

(5x) (x - 6)(x - 2)

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(x - 6)(x + 3)

(5x)(x - 2)

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x + 3

you're gonna need some brackets in there to help us help you

also check it again... 20x3?.. is that 20*3, 20*x*3, or 20x^3 ?