9x^-4=0? trying to figure it out for hours
2007-12-15 16:53:04 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Maybe I'm reading it wrong, but doesn't this read, 9x to the power of negative four equals zero? Therefore, doesn't x have to equal zero??
2007-12-15 17:12:04 · answer #1 · answered by keshequa87 6 · 0⤊ 1⤋
X = 0
2007-12-15 17:00:43 · answer #2 · answered by DJE 3 · 1⤊ 1⤋
Step One: (1/9x^4)=0 --> gets rid of the negative power
Step Two: 9*(1/9x^4)=9*0 --> gets rid of fraction
Step Three: 9x^4=0
Step Four: x=0 --> has to, since only 0^4=0.
2007-12-15 16:58:58 · answer #3 · answered by boxster1990 1 · 0⤊ 1⤋
I got no solution because if you divide 0 by 9, you get x^-4=0 and x^-4 is the same as 1/x^4, and if you multiply x^4 by zero on the other side, you get 1=0 which is impossible. Therefore, there's no solution.
2007-12-15 17:06:49 · answer #4 · answered by Peter 2 · 0⤊ 0⤋
9x^ -4=0. 9( 1/x^4)=0.
0.
2007-12-16 02:13:20 · answer #5 · answered by Sasi Kumar 4 · 0⤊ 0⤋
You mean 9x to the power of 4 right?...
I'm guessing that's equal to (9)/(x^4) but I don't know how to solve that so ya...
2007-12-15 17:43:01 · answer #6 · answered by Anonymous · 0⤊ 0⤋
9x² - 4 = 0
That's the difference of two squares, so the solution is
( 3x + 2 ) ( 3x - 2 ) = 0
The roots are x = 2/3 and x = -2/3.
2007-12-15 17:09:32 · answer #7 · answered by wudup 1 · 0⤊ 0⤋
9x^-4 is the same as 1/(9(x^4)) therefore x needs to be approaching infinity for the statement to be true. Don't be fooled. x is NOT equal to zero.
2007-12-15 17:01:11 · answer #8 · answered by solo 4 · 1⤊ 0⤋
I'm guessing that you meant
9x² - 4 = 0
That's the difference of two squares, so the solution is
( 3x + 2 ) ( 3x - 2 ) = 0
The roots are x = 2/3 and x = -2/3.
2007-12-15 16:56:01 · answer #9 · answered by jgoulden 7 · 0⤊ 0⤋
9x^-4 is the same as 1/(9x)^4, so it is the same as 1/6561x^4, so no solution.
2007-12-16 16:41:40 · answer #10 · answered by Anonymous · 0⤊ 0⤋
= 2/3 and x = -2/3.
2007-12-15 17:12:16 · answer #11 · answered by aj m 1 · 0⤊ 0⤋