Datrys 0.01(x-y)^2-9

$$0.01 ( x - y ) ^ { 2 } - 9$$

Enrhifo

$$\frac{\left(x-y\right)^{2}}{100}-9$$

Camau Ateb

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

$$0.01\left(x^{2}-2xy+y^{2}\right)-9$$

Defnyddio’r briodwedd ddosbarthu i luosi 0.01 â x^{2}-2xy+y^{2}.

$$0.01x^{2}-0.02xy+0.01y^{2}-9$$

Ehangu

$$-\frac{xy}{50}+\frac{x^{2}}{100}+\frac{y^{2}}{100}-9$$

Camau Ateb

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

$$0.01\left(x^{2}-2xy+y^{2}\right)-9$$

Defnyddio’r briodwedd ddosbarthu i luosi 0.01 â x^{2}-2xy+y^{2}.

$$0.01x^{2}-0.02xy+0.01y^{2}-9$$