Question

The roots of 2k^2 + 6 = x^2 + 8x are equal.. How do I solve for k? :( Thanks!

Answer 1

solve for roots of one side so roots of (x^2+8x) are x(x+8) so they are x1=0 and x=-8

Answer 2

but how will I solve for k if I don't know x? :(

Answer 3

w8 a sec....were they under sqr?

Answer 4

the original wasn't under a square root

Answer 5

then tht's not right

Answer 6

no angela, by roots they meant x(x+8)
x=0 and x=-8

Answer 7

yea Lana...i misunderstood it ;/

Answer 8

:D
but ur answer was right

Answer 9

oops ;/

Answer 10

lols

Answer 11

I'm lost sorry :(

Answer 12

x^2+8x-((2k^2)+6), then apply the quadratic formula with a=1, b=8, c=-((2k^2)+6), assuming k is just a constant

Answer 13

The answer is 11/6.. I just don't know how it happened. :(

Answer 14

sorry i was wrong but there is something fishy about this problem...

Answer 15

It's okay :) Thanks anyway!

Answer 16

Dimsy, what is variable in this case (x or k) ?