Efectuati calculele a) 6 radical 7+3(radical 3-2 radical 7

Efectuati Calculele A 6 Radical 73radical 32 Radical 7 class=

Răspuns :

a) 6√7 + 3√3 - 6√7= 3√3
c) √5×(2√3 - 4√2)+√60= 2√5×√3 - 4√5×√2 + √2²×15 =2√15 -4√10+2√15= - 4√10
d) 3×(2√7 - 3√3) -252= 6√7 - 9√3 -252
e) 5×(√5 + 2√7) - 2×(√7 +3√5)=
=5√5 +10√7 - 2√7 - 6√5=
=8√7 -√5