Question

Evaluate when t=1.5
[(t+2)squared-3t]/5
the answer is (t squared +t+4)/5 right?

Answer 1

are you just plugging in t=1.5? This sounds like particle motion (calculus and physics).

Answer 2

I just plugged it into the simplified form and got 1.55. Is that right?

Answer 3

Is this calculus? Particle motion is not that easy.

Answer 4

no i think it's algebra

Answer 5

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

Answer 6

grazi, wanna help me with another one, simpler ?

Answer 7

Go for it! If I can help you, I will.

Answer 8

i'm posting it in the chat

Answer 9

by the way you answer is correct if you did not have t=1.5

Answer 10

huh???

Answer 11

\[\left( (t+2)^2-3t \right)/5=\left( t^2+t+4 \right)/5\]