Datrys (5+9)(b+8)(b+7)*(b+6)(5+5)+2

$$( 5 + 9 ) ( b + 8 ) ( b + 7 ) \cdot ( b + 6 ) ( 5 + 5 ) + 2$$

Enrhifo

$$2\left(70\left(b+6\right)\left(b+7\right)\left(b+8\right)+1\right)$$

Camau Ateb

Adio 5 a 9 i gael 14.

$$14\left(b+8\right)\left(b+7\right)\left(b+6\right)\left(5+5\right)+2$$

Adio 5 a 5 i gael 10.

$$14\left(b+8\right)\left(b+7\right)\left(b+6\right)\times 10+2$$

Lluosi 14 a 10 i gael 140.

$$140\left(b+8\right)\left(b+7\right)\left(b+6\right)+2$$

Defnyddio’r briodwedd ddosbarthu i luosi 140 â b+8.

$$\left(140b+1120\right)\left(b+7\right)\left(b+6\right)+2$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 140b+1120 gan bob b+7.

$$\left(140b^{2}+980b+1120b+7840\right)\left(b+6\right)+2$$

Cyfuno 980b a 1120b i gael 2100b.

$$\left(140b^{2}+2100b+7840\right)\left(b+6\right)+2$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 140b^{2}+2100b+7840 gan bob b+6.

$$140b^{3}+840b^{2}+2100b^{2}+12600b+7840b+47040+2$$

Cyfuno 840b^{2} a 2100b^{2} i gael 2940b^{2}.

$$140b^{3}+2940b^{2}+12600b+7840b+47040+2$$

Cyfuno 12600b a 7840b i gael 20440b.

$$140b^{3}+2940b^{2}+20440b+47040+2$$

Adio 47040 a 2 i gael 47042.

$$140b^{3}+2940b^{2}+20440b+47042$$

Ehangu

$$140b^{3}+2940b^{2}+20440b+47042$$

Camau Ateb

Adio 5 a 9 i gael 14.

$$14\left(b+8\right)\left(b+7\right)\left(b+6\right)\left(5+5\right)+2$$

Adio 5 a 5 i gael 10.

$$14\left(b+8\right)\left(b+7\right)\left(b+6\right)\times 10+2$$

Lluosi 14 a 10 i gael 140.

$$140\left(b+8\right)\left(b+7\right)\left(b+6\right)+2$$

Defnyddio’r briodwedd ddosbarthu i luosi 140 â b+8.

$$\left(140b+1120\right)\left(b+7\right)\left(b+6\right)+2$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 140b+1120 gan bob b+7.

$$\left(140b^{2}+980b+1120b+7840\right)\left(b+6\right)+2$$

Cyfuno 980b a 1120b i gael 2100b.

$$\left(140b^{2}+2100b+7840\right)\left(b+6\right)+2$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 140b^{2}+2100b+7840 gan bob b+6.

$$140b^{3}+840b^{2}+2100b^{2}+12600b+7840b+47040+2$$

Cyfuno 840b^{2} a 2100b^{2} i gael 2940b^{2}.

$$140b^{3}+2940b^{2}+12600b+7840b+47040+2$$

Cyfuno 12600b a 7840b i gael 20440b.

$$140b^{3}+2940b^{2}+20440b+47040+2$$

Adio 47040 a 2 i gael 47042.

$$140b^{3}+2940b^{2}+20440b+47042$$