13. If the distance between (3, – 3) and (x,- 7) is 5 then x =
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Answered by
1
(3-x)²+(-3+7)²=25
9+x²-6x+16=25
x²-6x+25=25
x²-6x=25-25
x²-6x=0
x(x-6)=0
so x=0,6
vanthaliansanga:
i got it✔
i don't understand this part 9+x^2 - 6x +16
please help
understand now
ty
Answered by
1
(x-3)^2+(-7+3)^2=25
(x-3)^2+16=25
(x-3)^2=9
x-3=-3,3
x=0,6
(x-3)^2+16=25
(x-3)^2=9
x-3=-3,3
x=0,6
from where 25 come out
Square of distance between points
According to question
Distance between points is 5
Distance between points is 5
i got it ✔
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