Răspunsuri

2014-05-26T21:02:31+03:00
B)1/3x-1/4=0
1/3x=1/4
3x=4
x=4/3
c)  √2x+√2-x=2-√2
√2x-x=2-√2-√2
x(√2-1)=2-2√2
x=2(1-√2)/(√2-1)  ⇒   x=-2(√2-1)/(√2-1)  se simplifica
x=-2
2014-05-26T21:04:14+03:00
B) x√2+√2-x=2-√2
x(√2-1)=2-√2-√2=2-2√2=2(1-√2)=-2(√2-1)
x(√2-1)=-2(√2-1)
x=-2
a)1/3x-1/4=0
4-3x=0
-3x=-4
3x=4
x=4/3