Nie wim jak się pozbyc tych pierwiastków :(
Proszę o pomoc :)
x√2 -2 x - √2
------------ < ----------------
√5 √2
(x√2 -2) · √5 (x - √2) · √2
--------------------- < -----------------------
√5 · √5 √2 · √2
x√10 - 2√5 x√2 - 2
--------------------- < ------------------------ / · 10
5 2
2(x√10 - 2√5) < 5 (x√2 - 2)
2√10x - 4√5 < 5√2x - 10
2√10x - 5√2x < 4√5 - 10
x ( 2√10 - 5√2) < 4√5 - 10 /: (2√10 - 5√2) [ 2√10 - 5√2 < 0 ]
4√5 - 10
x > -------------------------
2√10 - 5√2
(4√5-10)(2√10+5√2)
x > ------------------------------------------
(2√10-5√2)(2√10+5√2)
8√50 + 20√10 - 20√10 - 50√2
x > -----------------------------------------------
40 - 50
40√2 - 50√2 -10√2
x > --------------------------- , x > ---------------------- , x > √2
-10 -10
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x√2 -2 x - √2
------------ < ----------------
√5 √2
(x√2 -2) · √5 (x - √2) · √2
--------------------- < -----------------------
√5 · √5 √2 · √2
x√10 - 2√5 x√2 - 2
--------------------- < ------------------------ / · 10
5 2
2(x√10 - 2√5) < 5 (x√2 - 2)
2√10x - 4√5 < 5√2x - 10
2√10x - 5√2x < 4√5 - 10
x ( 2√10 - 5√2) < 4√5 - 10 /: (2√10 - 5√2) [ 2√10 - 5√2 < 0 ]
4√5 - 10
x > -------------------------
2√10 - 5√2
(4√5-10)(2√10+5√2)
x > ------------------------------------------
(2√10-5√2)(2√10+5√2)
8√50 + 20√10 - 20√10 - 50√2
x > -----------------------------------------------
40 - 50
40√2 - 50√2 -10√2
x > --------------------------- , x > ---------------------- , x > √2
-10 -10