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# halp plzz

-3
117
2
+176

$$The length of the segment between the points (2a, a-4) and (4, -1) is 2\sqrt{10} units. What is the product of all possible values for a?$$

May 30, 2020

#1
+661
+1

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- Just plug into the distance formula and solve.

$$(2\sqrt{10})^2=40$$

$$(4-2a)^2+(-1-(a-4))^2=40$$

$$(4-2a)^2+(3-a)^2=40$$

Now solve (if you can, try using vieta's formulas to do it even faster.)

May 30, 2020
#2
+176
+2

:'-(

I donnt get it

May 31, 2020