sqrt(4*x^2)*sqrt(13/52x^2 = x^2
√4x2×√1352x2=x2
v=x2
√4v×√1352v=v
4v×1352v=v2 [ * 52v
52v=52v3
v2=1
x=±1 Gruß asinus :- ) !
√4(−1)2×√1352(−1)2=(−1)2
2 × 12 = 1
√4∗12×√1352∗12=12
2 × 12 =1