An algebra problem by Wildan Bagus Wicaksono

Algebra Level 2

If $\sqrt { 2017{ x }^{ 2 }+2018x+56 } +\sqrt { 2017{ x }^{ 2 }+2018x-56 } =112$ , determine the value of $\sqrt { 2017{ x }^{ 2 }+2018x+56 } -\sqrt { 2017{ x }^{ 2 }+2018x-56 }$