Datrys ar gyfer a
a=2.4
Neilltuo a
a≔2.4
Rhannu
Copïo i clipfwrdd
a=\sqrt{6.25-0.7^{2}}
Cyfrifo 2.5 i bŵer 2 a chael 6.25.
a=\sqrt{6.25-0.49}
Cyfrifo 0.7 i bŵer 2 a chael 0.49.
a=\sqrt{5.76}
Tynnu 0.49 o 6.25 i gael 5.76.
a=2.4
Cyfrifo ail isradd 5.76 a chael 2.4.
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