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FFACTORAU CYSEFIN

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Ydych chi'n cofio'r rhifau cysefin?. 2, 3, 5, 7, 11, 13, 17, 19, 23, 29,

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FFACTORAU CYSEFIN

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    1. FFACTORAU CYSEFIN YSGRIFENNU RHIF FEL LLUOSWM EI FFACTORAU CYSEFIN

    2. Ydych chi’n cofio’r rhifau cysefin? 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, ….

    3. Dadelfeniad ffactorau cysefin

    4. Dadelfenniad ffactorau cysefin (2)

    5. Darganfod israddau. Ystyriwch y rhif 36 Ei ail isradd yw 36 fel lluoswm ei rifau cysefin yw

    6. Darganfod israddau (2) Beth yw ail isradd 400? Mynegwn 400 fel lluoswm ei rifau cysefin ar ffurf indecs. Mae hyn yn rhoi 24 x 52 Ail isradd 24 yw 22 sef 4 Ail isradd 52 yw 5 Ail isradd 400 yw 4 x5 = 20

    7. Troi rhif yn rif sgwâr Cofiwn am y rhif 56 Gallwn ei ysgrifennu fel 56= 2³ x 7 I droi’r pweroedd yn eilrifau rhaid lluosi 2³ gyda

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