Solve the Equation

Not for >12th

Solve the equation:

\frac{x^3}{x^3 + 27+9x(x+3)} = \frac{x-3}{x+6}

5 Answers

106

Asish Mahapatra ·2009-07-21 23:39:06

applying componendo dividendo:

\frac{2x^3+9x^2+27x+27}{x^2+3x+3} = 2x+3

2x^3+9x^2+27x+27 = 2x^3+9x^2+15x+9

12x=-18, x=-3/2

two other unreal solutions would be xâ†’âˆž and xâ†’ -âˆž

sir,my answer too is coming ,x= -3/2

341

Hari Shankar ·2009-07-21 23:51:31

yup, good job

106

Asish Mahapatra ·2009-07-22 00:09:19

sir why the topic Not for >12th ?

341

Hari Shankar ·2009-07-22 01:03:56

coz it is easy , so i thought it's good for engaging 11th class students

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