Temat: Równania niezupełne.
Rozwiąż:
a) -x2 + 4 = 0
b) -x2 + 9 = 0
c) x2 - 25 = 0
d) -3x2 + 12 = 0
a)
-x2 + 4 = 0
-x2=-4/*(-1)
x2=4
x=2 lub x=-2
b)
-x2 + 9 = 0
-x2=-9/*(-1)
x2=9
x=3 lub x=-3
c)
x2 - 25 = 0
x2=25
x=5 lub x=-5
d)
-3x2 + 12 = 0
-3x2=-12/*(-1)
3x2=12/3
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a)
-x2 + 4 = 0
-x2=-4/*(-1)
x2=4
x=2 lub x=-2
b)
-x2 + 9 = 0
-x2=-9/*(-1)
x2=9
x=3 lub x=-3
c)
x2 - 25 = 0
x2=25
x=5 lub x=-5
d)
-3x2 + 12 = 0
-3x2=-12/*(-1)
3x2=12/3
x2=4
x=2 lub x=-2