If [math]ax^4+3x^3-48x^2+60x=0[/math] has a double root at x=2 find:
a) The value of a
b) the sum of the other two roots
so far I've only found that [math]\beta+\gamma =1/a[/math]I've tried plugging [math]\beta =\frac{1}{a} - \gamma[/math] into the sum of two roots at a time but to no avail
a) The value of a
b) the sum of the other two roots
so far I've only found that [math]\beta+\gamma =1/a[/math]I've tried plugging [math]\beta =\frac{1}{a} - \gamma[/math] into the sum of two roots at a time but to no avail