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√2x=6/:√2
x=6/√2
x=6√2/2 uniewymierniamy
x=3√2
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x²-5=0
x²=5
x= -√5 ; x=√5
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4x(3-2x)(7+x)=0 ⇔ 4x=0 ∨ 3-2x=0 ∨ 7+x=0
x=0 ∨ -2x=-3/:(-2) ∨ x= -7
x=3/2
ta funkcja ma trzy miejsca zerowe :x= -7 ; x=0 ; x=3/2
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7x=0
x=0
√2x=6/:√2
x=6/√2
x=6√2/2
x=3√2
x²-5=0
x²=5
x= -√5 ; x=√5
4x(3-2x)(7+x)=0 ⇔ 4x=0 ∨ 3-2x=0 ∨ 7+x=0
x=0 ∨ -2x=-3/:(-2) ∨ x= -7
x=3/2 :x= -7 ; x=0 ; x=3/2