Enrhifo
10\sqrt{2}+7\approx 21.142135624
Rhannu
Copïo i clipfwrdd
8\sqrt{2}-9-\left(-2\sqrt{2}\right)-\left(-16\right)
I ddod o hyd i wrthwyneb -2\sqrt{2}-16, dewch o hyd i wrthwyneb pob term.
8\sqrt{2}-9+2\sqrt{2}-\left(-16\right)
Gwrthwyneb -2\sqrt{2} yw 2\sqrt{2}.
10\sqrt{2}-9-\left(-16\right)
Cyfuno 8\sqrt{2} a 2\sqrt{2} i gael 10\sqrt{2}.
10\sqrt{2}-9+16
Gwrthwyneb -16 yw 16.
10\sqrt{2}+7
Adio -9 a 16 i gael 7.
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Terfynau
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