Question

Va rog sa ma ajutati la ex. 28.
Multumesc!!

Answer 1

a)3(5-2√6)/(25-24) - 4(5√2+4√3)/(50-48) + 18(3+√6)/(9-6) + 24(3√2+2√3)/(18-12) = 15-6√6-10√2-8√3+18+6√6+12√2+8√3 = 33+2√2
b)2(3-2√2)/(9-8) + 2(3√2+4)/(18-16) + 4(6-4√2)/(36-32) + 4(5√2-7)/(50-49) = 6-4√2+3√2+4+6-4√2+20√2-28=23√2-12√2
c)6(2√7-5)/(28-25) - 4(3+√7)/(9-7) + 2(8-3√7)/(64-63) + 9(11+4√7)/(121-112) = 4√7-10-6-2√7+16-6√7+11+4√7=17
d)2(√5-√3)/(5-3) + 7(2√3+√5)/(12-5) - 8(2√5+2√3)/(20-12) + 3(4√3-3√5)/(48-45) = √5-√3+2√3+√5-2√5-2√3+4√3-3√5=3√3-4√5