<PRE><B>Question 230967</B>
what would you add to 4x^2-6x to make it a complete square? 

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If you square ax-b you get:
a^2x^2  - 2abx + b^2
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Your problem:
a^2 = 4, so a = 2.
-2ab = -6, so -2*2*b = -6 ; So b = -6/-4 = 3/2
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You need to add b^2 = 9/4
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None of the answers you listed is correct.
Cheers,
Stan H.




a.4/9 b.9/16 c.16/25 d.4/25 e.9/25
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