Question

Hey al! I need help ASAP!

Answer 1

Solve. \[\frac{ 8 }{ x } + \frac{ 15 }{ x^{2} } = -1\]

Answer choices are
A. x=5, -3
B. x=-5, -3
C. x=-5, 3
D. x=5, 3

Answer 2

Using x^2 as a common denominator for the left hand side
\[\frac{8x+15}{x ^{2}}=-1\]
then cross-multiplying
\[-x ^{2}=8x+15\]
and rearranging
\[x ^{2}+8x+15=0\]
Now just factorise the quadratic to find the roots.

Answer 3

But how do I get rid of the x^2? @kropot72

Answer 4

Answer:
(x - 5)(x - 3)

Answer 5

B. x=-5, -3