Datrys ar gyfer a
a\in \begin{bmatrix}-2\sqrt{2},2\sqrt{2}\end{bmatrix}
Rhannu
Copïo i clipfwrdd
a^{2}\leq \left(2\sqrt{2}\right)^{2}
Cyfrifo ail isradd 8 a chael 2\sqrt{2}. Ailysgrifennwch 8 fel \left(2\sqrt{2}\right)^{2}.
|a|\leq 2\sqrt{2}
Mae anghydraddoldeb ar gyfer |a|\leq 2\sqrt{2}.
a\in \begin{bmatrix}-2\sqrt{2},2\sqrt{2}\end{bmatrix}
Ailysgrifennwch |a|\leq 2\sqrt{2} fel a\in \left[-2\sqrt{2},2\sqrt{2}\right].
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