Find the distance between the points (-4, 3) and (5, -1)

Question

anonymous · Answer

distance formula$$d=\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}$$

anonymous · Answer

I did it and ended up with $$\sqrt{65}$$ is that right???

jim_thompson5910 · Answer

that's not correct, how did you get 65?

anonymous · Answer

$$\sqrt{(5+4)^{2}+ (-1-3)^{2}}   =  \sqrt{9^{2 }- 4^{2}}  = \sqrt{81-16}$$

jim_thompson5910 · Answer

it should be 81+16 not 81-16

amistre64 · Answer

$$\sqrt{(5+4)^{2}+ (-1-3)^{2}}   =  \sqrt{9^{2 }- 4^{2}}  = \sqrt{81-16}$$                                             ^^
                                             bad  :)

anonymous · Answer

now i got the square root of 162...

anonymous · Answer

its +16 not -16 because you're squaring a negative number
and a negative number square is always positive

anonymous · Answer

So if it's 81+16 it ends up being the square root of 97? And I just leave it as that?

anonymous · Answer

well if it cant be factored then you just leave it as it is

anonymous · Answer

is that what you got too?

anonymous · Answer

yes

anonymous · Answer

ok thank you!!