Datrys [(3y-5y)^{2}*(2x^2y^3)]:(1/2xy^2)^2-[20y-(-8y)]

$$[ ( 3 y - 5 y ) ^ { 2 } * ( 2 x ^ { 2 } y ^ { 3 } ) ] : ( \frac { 1 } { 2 } x y ^ { 2 } ) ^ { 2 } - [ 20 y - ( - 8 y ) ]$$

Enrhifo

$$4y$$

Camau Ateb

Cyfuno 3y a -5y i gael -2y.

$$\frac{\left(-2y\right)^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Ehangu \left(-2y\right)^{2}.

$$\frac{\left(-2\right)^{2}y^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Cyfrifo -2 i bŵer 2 a chael 4.

$$\frac{4y^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Lluosi 4 a 2 i gael 8.

$$\frac{8y^{2}x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 2 a 3 i gael 5.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Ehangu \left(\frac{1}{2}xy^{2}\right)^{2}.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}\right)^{2}x^{2}\left(y^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 2 a 2 i gael 4.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}\right)^{2}x^{2}y^{4}}-\left(20y-\left(-8y\right)\right)$$

Cyfrifo \frac{1}{2} i bŵer 2 a chael \frac{1}{4}.

$$\frac{8y^{5}x^{2}}{\frac{1}{4}x^{2}y^{4}}-\left(20y-\left(-8y\right)\right)$$

Canslo x^{2}y^{4} yn y rhifiadur a'r enwadur.

$$\frac{8y}{\frac{1}{4}}-\left(20y-\left(-8y\right)\right)$$

Rhannwch 8y â \frac{1}{4} drwy luosi 8y â chilydd \frac{1}{4}.

$$8y\times 4-\left(20y-\left(-8y\right)\right)$$

Gwrthwyneb -8y yw 8y.

$$8y\times 4-\left(20y+8y\right)$$

Cyfuno 20y a 8y i gael 28y.

$$8y\times 4-28y$$

Lluosi 8 a 4 i gael 32.

$$32y-28y$$

Cyfuno 32y a -28y i gael 4y.

$$4y$$

Ehangu

$$4y$$

Camau Ateb

Cyfuno 3y a -5y i gael -2y.

$$\frac{\left(-2y\right)^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Ehangu \left(-2y\right)^{2}.

$$\frac{\left(-2\right)^{2}y^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Cyfrifo -2 i bŵer 2 a chael 4.

$$\frac{4y^{2}\times 2x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Lluosi 4 a 2 i gael 8.

$$\frac{8y^{2}x^{2}y^{3}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 2 a 3 i gael 5.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}xy^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

Ehangu \left(\frac{1}{2}xy^{2}\right)^{2}.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}\right)^{2}x^{2}\left(y^{2}\right)^{2}}-\left(20y-\left(-8y\right)\right)$$

I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 2 a 2 i gael 4.

$$\frac{8y^{5}x^{2}}{\left(\frac{1}{2}\right)^{2}x^{2}y^{4}}-\left(20y-\left(-8y\right)\right)$$

Cyfrifo \frac{1}{2} i bŵer 2 a chael \frac{1}{4}.

$$\frac{8y^{5}x^{2}}{\frac{1}{4}x^{2}y^{4}}-\left(20y-\left(-8y\right)\right)$$

Canslo x^{2}y^{4} yn y rhifiadur a'r enwadur.

$$\frac{8y}{\frac{1}{4}}-\left(20y-\left(-8y\right)\right)$$

Rhannwch 8y â \frac{1}{4} drwy luosi 8y â chilydd \frac{1}{4}.

$$8y\times 4-\left(20y-\left(-8y\right)\right)$$

Gwrthwyneb -8y yw 8y.

$$8y\times 4-\left(20y+8y\right)$$

Cyfuno 20y a 8y i gael 28y.

$$8y\times 4-28y$$

Lluosi 8 a 4 i gael 32.

$$32y-28y$$

Cyfuno 32y a -28y i gael 4y.

$$4y$$