Question

Aflati numerele reale care verifica egalitatile. Punctul D​

Answer 1

Răspuns:

Explicație pas cu pas:

Aflati numerele reale care verifica egalitatile. Punctul D​

d) x/√18+√160/√5-2√294/√3=4√50/5+7√40/√245  ⇔

x/3√2+√(160/5)-2√(294/3)=4·5√2/5+7·2√10/7√5  ⇔

x√2/3·2+√32-2√98=4√2+2√(10/5)  ⇔

x√2/6+4√2-2·7√2=4√2+2√2  ⇔

x√2/6+4√2-14√2=6√2  ⇔x√2/6-10√2=6√2  ⇔x√2/6=16√2  |:√2  ⇔

x/6=16  ⇔x=16·6  ⇔x=96