Datrys (5t-1)^2+(2t-2)(-t+4)

$$( 5 t - 1 ) ^ { 2 } + ( 2 t - 2 ) ( - t + 4 )$$

Enrhifo

$$23t^{2}-7$$

Camau Ateb

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(5t-1\right)^{2}.

$$25t^{2}-10t+1+\left(2t-2\right)\left(-t+4\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 2t-2 â -t+4.

$$25t^{2}-10t+1+2t\left(-t\right)+8t-2\left(-t\right)-8$$

Lluosi -2 a -1 i gael 2.

$$25t^{2}-10t+1+2t\left(-t\right)+8t+2t-8$$

Cyfuno 8t a 2t i gael 10t.

$$25t^{2}-10t+1+2t\left(-t\right)+10t-8$$

Cyfuno -10t a 10t i gael 0.

$$25t^{2}+1+2t\left(-t\right)-8$$

Tynnu 8 o 1 i gael -7.

$$25t^{2}-7+2t\left(-t\right)$$

Lluosi t a t i gael t^{2}.

$$25t^{2}-7+2t^{2}\left(-1\right)$$

Lluosi 2 a -1 i gael -2.

$$25t^{2}-7-2t^{2}$$

Cyfuno 25t^{2} a -2t^{2} i gael 23t^{2}.

$$23t^{2}-7$$

Ehangu

$$23t^{2}-7$$

Camau Ateb

Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(5t-1\right)^{2}.

$$25t^{2}-10t+1+\left(2t-2\right)\left(-t+4\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 2t-2 â -t+4.

$$25t^{2}-10t+1+2t\left(-t\right)+8t-2\left(-t\right)-8$$

Lluosi -2 a -1 i gael 2.

$$25t^{2}-10t+1+2t\left(-t\right)+8t+2t-8$$

Cyfuno 8t a 2t i gael 10t.

$$25t^{2}-10t+1+2t\left(-t\right)+10t-8$$

Cyfuno -10t a 10t i gael 0.

$$25t^{2}+1+2t\left(-t\right)-8$$

Tynnu 8 o 1 i gael -7.

$$25t^{2}-7+2t\left(-t\right)$$

Lluosi t a t i gael t^{2}.

$$25t^{2}-7+2t^{2}\left(-1\right)$$

Lluosi 2 a -1 i gael -2.

$$25t^{2}-7-2t^{2}$$

Cyfuno 25t^{2} a -2t^{2} i gael 23t^{2}.

$$23t^{2}-7$$