Datrys 1-2*{left(7/25right)}^2

$$1-2 \times { \left( \frac{ 7 }{ 25 } \right) }^{ 2 }$$

Enrhifo

$$\frac{527}{625}=0.8432$$

Camau Ateb

Cyfrifo \frac{7}{25} i bŵer 2 a chael \frac{49}{625}.

$$1-2\times \frac{49}{625}$$

Mynegwch 2\times \frac{49}{625} fel ffracsiwn unigol.

$$1-\frac{2\times 49}{625}$$

Lluosi 2 a 49 i gael 98.

$$1-\frac{98}{625}$$

Troswch y rhif degol 1 i’r ffracsiwn \frac{625}{625}.

$$\frac{625}{625}-\frac{98}{625}$$

Gan fod gan \frac{625}{625} a \frac{98}{625} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{625-98}{625}$$

Tynnu 98 o 625 i gael 527.

$$\frac{527}{625}$$

Ffactor

$$\frac{17 \cdot 31}{5 ^ {4}} = 0.8432$$