2006-06-12 10:14:54 · 12 answers · asked by mathmakesmewant2die 1 in Science & Mathematics ➔ Mathematics
9x^2 - 30x + 25 = 0 = (3x - 5)^2
x = 5/3
2006-06-12 10:31:55 · answer #1 · answered by Baseball Fanatic 5 · 0⤊ 0⤋
X=5/3
2006-06-12 10:29:49 · answer #2 · answered by goldengal 2 · 0⤊ 0⤋
9x^2 = 30x - 25
9x^2 - 30 x + 25 = 0
(3 x - 5)( 3x - 5) = 0
therefore 3x = 5
wherefore x = 5/3
2006-06-12 14:08:08 · answer #3 · answered by Mr Hex Vision 7 · 0⤊ 0⤋
Well I passed maths in College by 90%; a whole 9% above the next highest student and that doesn't seem to make sense. What's it meant to do or say?
Like ok, 9x squared may well = 30x-25 but there's no way to work it out. If it was a similtanious equation, with another like it below then ok, but not as it is.
2006-06-12 10:59:57 · answer #4 · answered by smile4763 4 · 0⤊ 0⤋
9x^2 = 30x-25
9x^2 -30x = -25
x(9x - 30 ) = -25
ie; x = -25 or 9x - 30 = -25
9x = 30-25
9x = 5
x = 5/9
x has 2 values = -25 or 5/9
2006-06-13 10:41:27 · answer #5 · answered by chinnu6682 1 · 0⤊ 0⤋
9x^2-30x+25=0
(3x-5)(3x-5)=0
x=5/3
2006-06-12 12:09:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
9x2 – 30x + 25 = 0
9x^2 – 15x – 15x +25 = 0
3x(3x-5) – 5(3x-5) = 0
(3x-5) (3x-5) = 0
Or (3x-5)^2 = 0
i.e. 3x-5 = 0
3x = 5 (add 5 to both sides)
x = 5/3
2006-06-12 10:25:06 · answer #7 · answered by Munir B 3 · 0⤊ 0⤋
9x squared = 30*-25
(9x)^2 = 30 * -25
81 * x^2 = -750
x^2 = -750/81
x^2 = -9.26
x = square root of -9.26
which is INVALID!
2006-06-12 10:22:37 · answer #8 · answered by HimanshuMehani 3 · 0⤊ 0⤋
9(x^2)=30x-25...
9(x^2)-30x+25=0
x=15/9
2006-06-12 10:23:25 · answer #9 · answered by jogimo2 3 · 0⤊ 0⤋
(3x-5)(3x-5)=0
therefore x=5/3
2006-06-12 14:18:17 · answer #10 · answered by aKaShAnKsTa 2 · 0⤊ 0⤋