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Posted by on Wednesday, September 12, 2007 at 8:49pm.

it has been 2 hours, can't someone please help me? I need to know if what I did was right, I think it is wrong and one of the numbers is supposed to subtracted instead of added.

= 2.44 (t^2-2t-1)

& then

0=0.61t^2-4.88+2.44 >>>I think it should be -2.44

and then into the quadratic equation it goes?

  • GRADE 12 PHYSICS AGAIN - , Wednesday, September 12, 2007 at 9:12pm

    NO. (t+1)^2 is t^2 + 2t + 1

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