Good_Birdy
New member
- Joined
- Feb 10, 2007
- Messages
- 7
Originaly I was finding when a ball is at 117ft when modeled by the eq:
s(t)=-16^2+128t+5
the book tells me to factor and set the equation equal to 117 so:
-16^2+128t+5=117
-16(t^2-8t+7)=0 <--- I don't understand how they got here.
-16(t-1)(t-7=0
Can anyone help me?
s(t)=-16^2+128t+5
the book tells me to factor and set the equation equal to 117 so:
-16^2+128t+5=117
-16(t^2-8t+7)=0 <--- I don't understand how they got here.
-16(t-1)(t-7=0
Can anyone help me?