P=(0,0)" and "S=x^(2)+y^(2)-14x+2y+25

Fing the length of tangent from P to the , circle S = 0 when P= (0,0), S-= x^(2) +y^(2) - 14x + 2y + 25

The radical axis of the circles x^(2) + y^(2) - 6x - 4y - 44 = 0 " and " x^(2) + y^(2) - 14x - 5y - 24 = 0 is

Fing the length of tangent from P to the ltbr., circle S = 0 when P = (-2,5) and S -= x^(2) + y^(2) -25

Fing the length of tangent from P to the ltbr., circle S = 0 when P = (2,5) and S-= x^(2) + y^(2) - 5x + 4y - 5

If P(x,y), S(3,0), S^(')(-3,0) " and "16x^(2)+25y^(2)=400, " then "PS+PS^(')=