Find the domian
x squared+3x+2
------------------------ (fraction)
x squared - 10x +9
2007-08-07 06:42:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
the domain is all values of x that satisfy the equation.
The only mathematical rule that can be broken in this case is dividing by 0.
So, x^2 - 10x + 9 /= 0 (/= means not equal)
Factoring,
(x-9)(x-1) /= 0
so x can not equal 1 and x can not equal 9.
So the domain is all real numbers, not including 1 or 9.
2007-08-07 06:44:54 · answer #1 · answered by sharky.mark 4 · 1⤊ 1⤋
The denominator cannot be zero
x^2 - 10x + 9 =/= 0
(x - 1)(x - 9) =/= 0
x =/= 1 and x =/=9
The domain is R-{1,9}
2007-08-07 13:47:08 · answer #2 · answered by Amit Y 5 · 0⤊ 0⤋
x^2-10x+9=0
(x-9)(x-1)=0
x-9=0 x-1=0
x=9 x=1
domain=R-{9,1}
2007-08-07 13:53:47 · answer #3 · answered by Anonymous · 1⤊ 0⤋
x^2-10x+9=0
factor it... (x-9)(x-1)=0
x-9=0 x-1=0
x=9 x=1
domain=R-{9,1}
2007-08-07 13:56:57 · answer #4 · answered by Tall Chick 2 · 1⤊ 0⤋