`sqrt(25-12+155+1)=?`

What will come in place of question mark (?) in the following equation? ( sqrt 25 x 12) ÷15 + sqrt 256 = ?

(sqrt(5 + 12 i ) + sqrt( 5 - 12 i) ) /(sqrt(5 + 12 i ) - sqrt( 5 - 12 i))=

sqrt(1.5625)=?( a) 1.05 (b) 1.25(c)1.45 (d) 1.55

The ration in which the line segement joining the points (4,-6) and (3,1) is divided by the parabola y^2=4x is (-20+-sqrt(155))/(11):1 (b) (-20+-sqrt(155))/(11):2 -20+-2sqrt(155): 11 (d) -20+-sqrt(155): 11

The ratio in which the line segement joining the points (4,-6) and (3,1) is divided by the parabola y^2=4x is (a) (-20+-sqrt(155))/(11):1 (b) (-20+-sqrt(155))/(11):2 (c) -20+-2sqrt(155): 11 (d) -20+-sqrt(155): 11

The ration in which the line segement joining the points (4,-6) and (3,1) is divided by the parabola y^2=4x is (a) (-20+-sqrt(155))/(11):1 (b) (-20+-sqrt(155))/(11):2 (c) -20+-2sqrt(155): 11 (d) -20+-sqrt(155): 11

sqrt (1+ (25) / (144)) = 1+ (x) / (12) ten =?

{:("Column A"," ","Column B"),(sqrt(12.5)+sqrt(12.5),,sqrt(25)):}