2007-11-25 19:13:56 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
a + 4 = 0
a = - 4
3a - 2 = 0
3a = 2
a = 2/3
a = - 4 , a = 2/3
2007-11-25 20:05:31 · answer #1 · answered by Como 7 · 2⤊ 1⤋
since the entire expression is set to 0, we need merely set the individual factors to 0. By this, I mean a + 4 = 0 and 3a - 2 = 0
After this, solve for a in both
for a + 4 = 0
subtract 4 from both sides
a = -4
for 3a - 2 = 0
add 2 to both sides
3a = 2
divide both sides by three
a = 2/3
this gives you two answers, a = 2/3 and a =-4
2007-11-26 03:20:18 · answer #2 · answered by TheTechKid 3 · 0⤊ 0⤋
If you need to solve for a, then take each parentheses as a different equation. You'll have two equations:
Equation 1: (a + 4) = 0 ==> a = -4
Equation 2: (3a - 2) = 0 ==> 3a = 2 ==> a = 2/3
So a = -4 OR 2/3
Hope I helped! :-)
2007-11-26 03:19:09 · answer #3 · answered by Jacob F 5 · 1⤊ 1⤋
-4 = A
2007-11-26 03:20:00 · answer #4 · answered by Wright 4 · 0⤊ 0⤋
(a+4)(3a-2) = 0
a+4=0 3a-2=0
a=-4 3a=2
a= 2/3
A = -4 and 2/3
2007-11-26 03:42:12 · answer #5 · answered by Aimee R 3 · 0⤊ 1⤋
(a+4) = 0 or (3a-2) = 0
a = -4 or 2/3
2007-11-26 03:18:50 · answer #6 · answered by Mein Hoon Na 7 · 1⤊ 1⤋
if you're looking for a, just equate both factors to zero.
You'll come up with these values:
a = -4
a = 2/3
if you want to expand it, the answer is:
3a^2 + 10a - 8
2007-11-26 03:20:29 · answer #7 · answered by gayle:D 2 · 0⤊ 1⤋
foil it out
(a)(3a) + a(-2) + 3(3a) + 4(-2) = 0
3a(squared) -2a +9a -8=0
a= -2 b= 9 c= -8
use quadratic formula...
-b (plus or minus) Square root (b squared - 4ac) divided by 2a
-7 (plus or minus) square root (49 - 96) divided by 6
-7 (plus or minus) square root (47) divided by 6
2007-11-26 03:23:13 · answer #8 · answered by theguywiththebigstick- What now! 3 · 0⤊ 1⤋
a=-4or 2/3
2007-11-26 03:18:36 · answer #9 · answered by someone else 7 · 1⤊ 0⤋