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Calculati dupa ce ati scos factorii de sub radical:
C)radical160 -(radical 810 -radical9610+radical9760)

D)radical4375-(radical3087+radical4732-radical2268)


Răspuns :

C)√160 -(√810 -√9610+√9760)=
=4√10 -9√10 +31√10-4√610=
=26√10-4√610

D)√4375-(√3087+√4732-√2268) =
=
25√7-(21√7+26√7-18√7) =
=25√7-29√7 =-4√7
C) √160-(√810-√9610+√6760)=
=√4²·√10-( √9²·√10 -√31²·√10+√2²·√13²·√10)=
=2√10-( 3√10 -31√10+4·13√10)=
=2√10 -(-28√10+52√10)=
=2√10-24√10=
=-22√10

D) √4375-(√3087+√4732-√2268)=-4√7
=√25²·√7- (√21²·√7+√2²·√13²·√7-√9²·√2²·√7)=
=25√7-(21√7+26√7-18√7)=
=25√7-(47√7-18√7)=
=25√7-29√7=
=-4√7