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Solve the equation 9x^2-12x+20=0 by fact...

Solve the equation `9x^2-12x+20=0` by factorisation mehod.

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`9x^2-12x+20=0
`rArr9x^2 -12x+4+16=0`
`(3x-2)^2+16=0`
`rArr(3x-2)^2-(4i)=0`
`rArr(3x-2+4i)(3x-2-4i)=0`
`rArr3x-2+4i=0`, or 3x-2-4i=0
`rArr3x=2-4i`, or 3x=2+4i.
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