Ecuațiile de forma x²=a, (a € R):
[tex]x^2 = 196 \Rightarrow x^2 = 14^2 \Rightarrow |x|=14 \Rightarrow \bf x = \pm 14[/tex]
[tex]x^2 = 432 \Rightarrow |x|=\sqrt{432} = \sqrt{12^2 \cdot 3} = 12\sqrt{3} \Rightarrow \bf x = \pm 12\sqrt{3}[/tex]
[tex]x^2 = 144 \Rightarrow x^2 = 12^2 \Rightarrow |x|=12 \Rightarrow \bf x = \pm 12[/tex]
[tex]x^2 = 128 \Rightarrow |x|=\sqrt{128} = \sqrt{8^2 \cdot 2} = 8\sqrt{2} \Rightarrow \bf x = \pm 8\sqrt{2}[/tex]
[tex]x^2 = 324 \Rightarrow x^2 = 18^2 \Rightarrow |x|=18 \Rightarrow \bf x = \pm 18[/tex]
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Ecuațiile de forma x²=a, (a € R):
[tex]x^2 = 196 \Rightarrow x^2 = 14^2 \Rightarrow |x|=14 \Rightarrow \bf x = \pm 14[/tex]
[tex]x^2 = 432 \Rightarrow |x|=\sqrt{432} = \sqrt{12^2 \cdot 3} = 12\sqrt{3} \Rightarrow \bf x = \pm 12\sqrt{3}[/tex]
[tex]x^2 = 144 \Rightarrow x^2 = 12^2 \Rightarrow |x|=12 \Rightarrow \bf x = \pm 12[/tex]
[tex]x^2 = 128 \Rightarrow |x|=\sqrt{128} = \sqrt{8^2 \cdot 2} = 8\sqrt{2} \Rightarrow \bf x = \pm 8\sqrt{2}[/tex]
[tex]x^2 = 324 \Rightarrow x^2 = 18^2 \Rightarrow |x|=18 \Rightarrow \bf x = \pm 18[/tex]