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posted by krystal on Monday, February 16, 2009 at 7:06pm.

I've worked these problems but I was just wondering if someone could check over them to see if they're correct...if not please help! (u-2)(u+7) my answer: 7u^2-49u (5t-4)^2 my answer: 25t^2-40+16 Thank you :)

hmm, well use either FOIL or the distributive property. I will use distributive property: (u-2)(u+7) my answer: 7u^2-49u ----------------------- u(u+7) -2(u+7) u^2 + 7u - 2u - 14 = u^2 + 5 u - 14 ===============================

25t^2-40+16 You forgot a t 25t^2-40t+16

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