Let P be the plane with equation −x+2y+2z = −3.
Find four distinct points on P at distance
3√10
to the point Q = (−2, 3, −1)
(x+2)^2 + (y-3)^2 + (z+1)^2 = 90
so plug in a few values
Find four distinct points on P at distance
3√10
to the point Q = (−2, 3, −1)
so plug in a few values