Princezz3286
Junior Member
- Joined
- Nov 12, 2005
- Messages
- 66
I have a test monday and I would like to make sure my match is correct can you please verify?
1: Factor Completely: 16s^4 - 81t^4
I broke down into....
(4s^2 - 9t^2)(4s^2 + 9t^2)
I broke that down into.....
(2s - 3t)(2s + 3t) and (2s + 3t)(2s + 3t)
is that correct????
Another question I had a question on was
2: Solve 144m^2 = 25
I took the square root of both.....
12m = 5
and divided by 12 to get the variable alone.....
m= 5/12 did i do this correctly?
3: 4q(q - 5) + 14 = 11(2 + q)
4q^2 - 20q + 14 = 22 + 11q
- 11q -22
------------------------------------------
4q^2 - 31q - 8 = 0
(4q + 1) = 0
(q - 8) = 0
q= {-1/4 and 8} right?
1: Factor Completely: 16s^4 - 81t^4
I broke down into....
(4s^2 - 9t^2)(4s^2 + 9t^2)
I broke that down into.....
(2s - 3t)(2s + 3t) and (2s + 3t)(2s + 3t)
is that correct????
Another question I had a question on was
2: Solve 144m^2 = 25
I took the square root of both.....
12m = 5
and divided by 12 to get the variable alone.....
m= 5/12 did i do this correctly?
3: 4q(q - 5) + 14 = 11(2 + q)
4q^2 - 20q + 14 = 22 + 11q
- 11q -22
------------------------------------------
4q^2 - 31q - 8 = 0
(4q + 1) = 0
(q - 8) = 0
q= {-1/4 and 8} right?