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(√240+2√3 x √180)x (√375- √75x √80 )

Răspuns :

(√240+2√3 x √180)x (√375- √75x √80 ) = ( √240+2√540)*(√375-√6000)=

= (4√15+6√15)*(5√15-20√15)=10√15 * (-5√15)= -5*10*15= - 750