Răspunsuri

2014-05-18T14:26:28+03:00
2014-05-18T14:27:09+03:00
5x²-125=0
(5x-5√5)(5x-5√5)=0
5x-5√5=0⇒x=5-5√3
5x-5√5=0⇒x=-5-5√5
a la puterea2 - b la puterea 2=(a-b)(a+b)
Deci daca vrei sa o faci asa(dar te complici)trebuie25xla 2-5√5la 2-20x la 2=0
(5x-5√5)(5x+5√5)-20xla 2=0
Ok?