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2√225 + √169 +√729 = ....... m la puterea a 2

Răspuns :

2√225+√169+√729=
=2*15+13+27=
=30+13+27=
=43+27=70
2√225 + √169 +√729 = ....... m²
(2*15)+13+27=m²
30+40=m²
m²=70⇒m=√70