anonymous
  • anonymous
Evaluate when t=1.5 [(t+2)squared-3t]/5 the answer is (t squared +t+4)/5 right?
Mathematics
chestercat
  • chestercat
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precal
  • precal
are you just plugging in t=1.5? This sounds like particle motion (calculus and physics).
anonymous
  • anonymous
I just plugged it into the simplified form and got 1.55. Is that right?
precal
  • precal
Is this calculus? Particle motion is not that easy.

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anonymous
  • anonymous
no i think it's algebra
precal
  • precal
Ok then let's do it using Algebra only \[\left[ \left( t+2 \right)^2-3t \right]/5\] if t=1.5 then \[\left[ \left( 1.5+2 \right)^2-3*1.5 \right]/5\] \[\left[ \left( 3.5 \right)^2-4.5 \right]/5\] \[\left( 12.25-4.5 \right)/5\] \[\left( 7.75 \right)/5\] 1.55
anonymous
  • anonymous
grazi, wanna help me with another one, simpler ?
precal
  • precal
Go for it! If I can help you, I will.
anonymous
  • anonymous
i'm posting it in the chat
precal
  • precal
by the way you answer is correct if you did not have t=1.5
anonymous
  • anonymous
huh???
precal
  • precal
\[\left( (t+2)^2-3t \right)/5=\left( t^2+t+4 \right)/5\]

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