√52+4x+√52−4x=12
Ermittle x.
√52+4x+√52−4x=12 |252+4x+2⋅√52+4x⋅√52−4x+52−4x=1252+2⋅√52+4x⋅√52−4x+52=12104+2⋅√522−(4x)2=12 |−1042√2704−16x2=−92 |:2√2704−16x2=−46 |22704−16x2=2116 |+16x2−2116588=16x2 ∥:1636,75=x2⇒x1/2=±√36,75