## anonymous one year ago what is the distance between the following points (-2sqrt7,10)(4 sqrt 7, 8)

1. campbell_st

its simply a case of substitution into the distance formula $d = \sqrt{4\sqrt{7} + 2\sqrt{7})^2 + (8 - 10)^2}$ now simplify and calculate...

2. anonymous

d = sqrt(18+4 sqrt(7))

3. campbell_st

so the problem then becomes $d = \sqrt{(6\sqrt{7})^2 + (-2)^2}$

4. anonymous

so is it just 256

5. campbell_st

well you need to take the square root of 256

6. anonymous

so 16

7. campbell_st

that's correct