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2014-07-29T19:01:56+03:00
√18=3√2

√32=4√2

x√2 + 2x√2 + 4x√2 = 3√2 +4√2

7x√2=7√2 |:√2

7x=7

x=1
2 5 2
2014-07-29T21:34:05+03:00
1)Pe √18 il putem Scrie ca 3√2 iar pe √32 ca 4√22) Deci obtinem  x√2+2x√2+4x√2=3√2 +4√2⇔   7x√2=7√2 ⇔ 7x=7⇔x=1R/s x=1
1 5 1