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Dau coroannaaaaa!
Determinati numarul real x din:
a)√18+√50/x=7/√2+2/√8-4√5-√20/√10
/-inseamna supra!


Răspuns :

a)√18+√50/x=7/√2+2/√8-4√5-√20/√10

3√2+5√2/x=7√2/2+2/2√2-4√5-√2

3√2+5√2/x=4√2-4√5-√2
5√2/x=-4√5
x=5
√2/(-4√5)
x=
-5√10/20
x=-√10/4