Datrys (1-lambda)(1-lambda)(2-lambda)+2-lambda

$$( 1 - \lambda ) ( 1 - \lambda ) ( 2 - \lambda ) + 2 - \lambda$$

Enrhifo

$$\left(\lambda -2\right)\left(-\lambda ^{2}+2\lambda -2\right)$$

Camau Ateb

Lluosi 1-\lambda a 1-\lambda i gael \left(1-\lambda \right)^{2}.

$$\left(1-\lambda \right)^{2}\left(2-\lambda \right)+2-\lambda$$

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(1-\lambda \right)^{2}.

$$\left(1-2\lambda +\lambda ^{2}\right)\left(2-\lambda \right)+2-\lambda$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 1-2\lambda +\lambda ^{2} gan bob 2-\lambda .

$$2-\lambda -4\lambda +2\lambda ^{2}+2\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Cyfuno -\lambda a -4\lambda i gael -5\lambda .

$$2-5\lambda +2\lambda ^{2}+2\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Cyfuno 2\lambda ^{2} a 2\lambda ^{2} i gael 4\lambda ^{2}.

$$2-5\lambda +4\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Adio 2 a 2 i gael 4.

$$4-5\lambda +4\lambda ^{2}-\lambda ^{3}-\lambda$$

Cyfuno -5\lambda a -\lambda i gael -6\lambda .

$$4-6\lambda +4\lambda ^{2}-\lambda ^{3}$$

Ehangu

$$4-6\lambda +4\lambda ^{2}-\lambda ^{3}$$

Camau Ateb

Lluosi 1-\lambda a 1-\lambda i gael \left(1-\lambda \right)^{2}.

$$\left(1-\lambda \right)^{2}\left(2-\lambda \right)+2-\lambda$$

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(1-\lambda \right)^{2}.

$$\left(1-2\lambda +\lambda ^{2}\right)\left(2-\lambda \right)+2-\lambda$$

Cyfrifwch y briodoledd ddosrannol drwy luosi pob 1-2\lambda +\lambda ^{2} gan bob 2-\lambda .

$$2-\lambda -4\lambda +2\lambda ^{2}+2\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Cyfuno -\lambda a -4\lambda i gael -5\lambda .

$$2-5\lambda +2\lambda ^{2}+2\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Cyfuno 2\lambda ^{2} a 2\lambda ^{2} i gael 4\lambda ^{2}.

$$2-5\lambda +4\lambda ^{2}-\lambda ^{3}+2-\lambda$$

Adio 2 a 2 i gael 4.

$$4-5\lambda +4\lambda ^{2}-\lambda ^{3}-\lambda$$

Cyfuno -5\lambda a -\lambda i gael -6\lambda .

$$4-6\lambda +4\lambda ^{2}-\lambda ^{3}$$