It is: (a+1)(a+3) when factored
3(4a+b+2c)
(a + 9)(a - 3)
a2 + 12a + 27 = (a + 3)(a + 9)
a(4a - 3)(3a - 5)
Not sure why it is 3a2- if you mean 3*a*2, then: 3*a*2=6a (6a-2a)+5-2(a (or a2)+a)=1 4a+5-(2a+a)=1 4a+5-2a-a=1 Then take the 5 over (remember, the +5 become -5 when transposed): 4a-2a-a=1-5 Solving the equations on both sides gives: a=-4 Is this your answer?
4a+3-a =12 4a-a = 12-3 3a = 9 a = 3
5a
4a + 3a = (4 + 3)a = 7a
It depends on the exact form. If it is 4a + 12/(a + 3) then a cannot be -3 However, (4a + 12)/(a + 3) simplifies to 4. So there is no variable to worry about!
2a*3 = 8+4a 6a = 8+4a 6a-4a = 8 2a = 8 a = 4
"a" plus "3a" is equal to 4a. (3a+a=4a). You already have 3 "a's" and then you add another "a."
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3