Datrys (7+3)^2=7^2+2*7*3+3^2

$$( 7 + 3 ) ^ { 2 } = 7 ^ { 2 } + 2 \times 7 \times 3 + 3 ^ { 2 }$$

Gwireddu

Camau Ateb

Adio 7 a 3 i gael 10.

$$10^{2}=7^{2}+2\times 7\times 3+3^{2}$$

Cyfrifo 10 i bŵer 2 a chael 100.

$$100=7^{2}+2\times 7\times 3+3^{2}$$

Cyfrifo 7 i bŵer 2 a chael 49.

$$100=49+2\times 7\times 3+3^{2}$$

Lluosi 2 a 7 i gael 14.

$$100=49+14\times 3+3^{2}$$

Lluosi 14 a 3 i gael 42.

$$100=49+42+3^{2}$$

Adio 49 a 42 i gael 91.

$$100=91+3^{2}$$

Cyfrifo 3 i bŵer 2 a chael 9.

$$100=91+9$$

Adio 91 a 9 i gael 100.

$$100=100$$

Cymharu 100 gyda 100.

$$\text{true}$$