Find the equation for the tangent plane and the normal line at the point Po(1,2,1) on the surface 4x² + y² + 2z² = 10. Using a coefficient of 2 for x, the equation for the tangent plane is. Find the equations for the normal line. Let x = 1 + 8t. X = =, y=, z= (Type expressions using t as the variable.)

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