Question

Va rog!! Exercițiu 22. Urgent!!

Answer 1

√27=3√3
√75=5√3
√243=9√3
√48=4√3
√32=4√2
√50=5√2
√98=7√2
√108=6√3
√192=8√3
√12=2√3
√128=8√2
√72=6√2
√98=7√2
√162=9√2

a) =√3(3√3+5√3-9√3)+2√3·4√3-√2(4√2+5√2-7√2)
=√3·(-√3)+24-√2·2√2
=-3+24-4=21-4=17

b)=2√2(6√3+9√3-8√3-5√3)+2√3(8√2-6√2-7√2+9√2)
=2√2·2√3+2√3·4√2
=4√6+8√6=12√6