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Posted by **TUHITUHI** on Friday, October 5, 2012 at 11:50am.

(i) 4x^2 - 12x + 7

(ii) 4x^2 - 20x + 20

- math -
**Steve**, Friday, October 5, 2012 at 11:56amsince

(2x-3)^2 = 4x^2 - 12x + 9

(2x-5)^2 = 4x^2 - 20x + 25

it should be clear.

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