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2009-10-18T17:21:54+02:00
16x²-32=0
16(x²-2)=0
16(x-√2)(x+√2)=0
16(x-√2)=0v (x+√2)=0
x=√2 vx=-√2
2 4 2
2009-10-18T17:37:57+02:00
16x²-32=0
16x²=32
x²=32÷16
x²=2
x=√2 lub x=-√2
2 2 2