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-\sqrt{100}=\sqrt{\left(-10\right)^{2}}
Cyfrifo 10 i bŵer 2 a chael 100.
-10=\sqrt{\left(-10\right)^{2}}
Cyfrifo ail isradd 100 a chael 10.
-10=\sqrt{100}
Cyfrifo -10 i bŵer 2 a chael 100.
-10=10
Cyfrifo ail isradd 100 a chael 10.
\text{false}
Cymharu -10 gyda 10.
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