2007-01-02 09:34:26 · 6 answers · asked by tweety b 1 in Science & Mathematics ➔ Mathematics
a=0 or a=-8
2007-01-02 09:35:59 · answer #1 · answered by raj 7 · 0⤊ 0⤋
Your answer is 0, because even though 0+8=8, 8x0=0.
it could also be -8 because -8 + 8 = 0, then -8 x 0 = 0
2007-01-02 17:53:12 · answer #2 · answered by neenie217 2 · 0⤊ 0⤋
This equation becomes a^2 + 8a =0
or a*2 = -8a
or a = - (a^2) / 8
a = 0 would satisfy this equation. except for the minus.
So, it looks like we have the square root of a negative number. The number -0 will satisfy
Know about imaginary numbers?
2007-01-02 17:57:44 · answer #3 · answered by boodle_hunter 1 · 0⤊ 0⤋
2a+8a=0
10a=0
a=0/10
a=0
2007-01-02 18:07:57 · answer #4 · answered by jacobandalex 2 · 0⤊ 0⤋
Don't forget the first step - multiply the parentheticals by the first "a" ...
...so your first part of the solution would be...
...a(squared) + a8 = 0
then solve
2007-01-02 17:44:23 · answer #5 · answered by CigarMe 3 · 0⤊ 0⤋
a is zero or minus eight.
If you multiply two numbers together you only get zero if one of the numbers is zero.
2007-01-02 17:39:27 · answer #6 · answered by crazy_tentacle 3 · 0⤊ 0⤋