The inversion of a point Q with respect to a circle having centre at origin is Q'(6,2). If the radius of the circle of inversion is 10 units, find the point Q.​

How do i do this? i don’t understand

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?