Question

the lenght of the common cord of the circle
x^2+y^2+5x+7y+9=0 and x^2+y^2+7x+5y+9=0 is :
a) 9 b)8 c)7 d)6

Answer 1

this is much easier to solve geometrically.

Answer 2

mark the important co-ordinates.

Answer 3

and find out the radius (same for both circles)

Answer 4

alright

Answer 5

my answer is 6 .

Answer 6

is it ?

Answer 7

yep. correct

Answer 8

^^

Answer 9

and thanks once again !

Answer 10

glad t help again

Answer 11

to*