zadanie w załączniku
1) x2 + 2xy + y2 (x + y)2
--------------- = -----------
3x2 - 3y 3(x2 - y)
2) x2 + 2x - 15
-------------- D: x (należy) R\ {3}
2x - 6
delta= b2 - 4ac
delta= 4 + 60
delta = 64
Pierwiastek z delta = 8
x1 = -b - pierwiastek z delta/ 2a
x1 = -2-8/2
x1 =-5
x2 = -b + pierwiastek z delta / 2a
x2 = -2 + 8 /2
x2 = 2
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1) x2 + 2xy + y2 (x + y)2
--------------- = -----------
3x2 - 3y 3(x2 - y)
2) x2 + 2x - 15
-------------- D: x (należy) R\ {3}
2x - 6
delta= b2 - 4ac
delta= 4 + 60
delta = 64
Pierwiastek z delta = 8
x1 = -b - pierwiastek z delta/ 2a
x1 = -2-8/2
x1 =-5
x2 = -b + pierwiastek z delta / 2a
x2 = -2 + 8 /2
x2 = 2