Oblicz :
√5(√5+√125-√20)=
√5(√5+5√5-2√5)=
√5×4√5=20
√(225-144) +√225-√144=
√81+15-12=
9+3=12
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√5(√5+√125-√20)=
√5(√5+5√5-2√5)=
√5×4√5=20
√(225-144) +√225-√144=
√81+15-12=
9+3=12