Sqrt(75)+sqrt(3)? (leave in radical form)

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

How to do this , and can some one explain

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2