x4(2+3x)=129x. solve for x?

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2007-06-09 19:45:47 · 4 answers · asked by mardi 1 in Science & Mathematics ➔ Mathematics

x4(2 +3x) = 129x

8x + 12x² = 129x

8 + 12x = 129

12x = 121

x = 121/12

2007-06-09 19:53:03 · answer #1 · answered by J w 2 · 0⤊ 0⤋

you can divide by x remembering that x=0 is a root

4(2+3x) =129
8+12x = 129
12x= 121
x=121/12

2007-06-09 19:53:08 · answer #2 · answered by maussy 7 · 0⤊ 0⤋

x4(2+3x)=129x
8x+12x^2=129x
12x^2-121x=0
x(12x-121)=0
x=0 or x= 121/12

2007-06-09 20:09:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋

X=121/12
It is so easy!!

2007-06-09 19:57:30 · answer #4 · answered by gilberto d 1 · 0⤊ 0⤋