Odpowiedź:
C) x²+8:x²-4=2/•x²-4
x²+8=2(x²-4)
x²+8=2x²-8/-2x²
x²-2x²+8=-8/-8
-x²=-16/•(-1)
x²=16/√
x1=4
x2=-4
Odp: x1=4, x2=-4
D) 2x²-10:x²-9=1/•x²-9
2x²-10=1(x²-9)
2x²-10=x²-9/-x²
2x²-x²-10=-9/+10
x²=1/√
x1=1
x2=-1
Odp: x1=1, x2=-1
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Odpowiedź:
C) x²+8:x²-4=2/•x²-4
x²+8=2(x²-4)
x²+8=2x²-8/-2x²
x²-2x²+8=-8/-8
-x²=-16/•(-1)
x²=16/√
x1=4
x2=-4
Odp: x1=4, x2=-4
D) 2x²-10:x²-9=1/•x²-9
2x²-10=1(x²-9)
2x²-10=x²-9/-x²
2x²-x²-10=-9/+10
x²=1/√
x1=1
x2=-1
Odp: x1=1, x2=-1