Issolvi 2left(5n+1right)left(4n-4/5right)

$$2 \left( 5n+1 \right) \left( 4n- \frac{ 4 }{ 5 } \right)$$

Evalwa

$$40n^{2}-\frac{8}{5}$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika 2 b'5n+1.

$$\left(10n+2\right)\left(4n-\frac{4}{5}\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' 10n+2 b'kull terminu ta' 4n-\frac{4}{5}.

$$40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)$$

Esprimi 10\left(-\frac{4}{5}\right) bħala frazzjoni waħda.

$$40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)$$

Immultiplika 10 u -4 biex tikseb -40.

$$40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)$$

Iddividi -40 b'5 biex tikseb-8.

$$40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)$$

Ikkombina -8n u 8n biex tikseb 0.

$$40n^{2}+2\left(-\frac{4}{5}\right)$$

Esprimi 2\left(-\frac{4}{5}\right) bħala frazzjoni waħda.

$$40n^{2}+\frac{2\left(-4\right)}{5}$$

Immultiplika 2 u -4 biex tikseb -8.

$$40n^{2}+\frac{-8}{5}$$

Frazzjoni \frac{-8}{5} tista' tinkiteb mill-ġdid bħala -\frac{8}{5} bl-estrazzjoni tas-sinjal negattiv.

$$40n^{2}-\frac{8}{5}$$

Espandi

$$40n^{2}-\frac{8}{5}$$

Passi tas-Soluzzjonijiet

Uża l-propjetà distributtiva biex timmultiplika 2 b'5n+1.

$$\left(10n+2\right)\left(4n-\frac{4}{5}\right)$$

Applika l-propjetà distributtiva billi timmultiplika kull terminu ta' 10n+2 b'kull terminu ta' 4n-\frac{4}{5}.

$$40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)$$

Esprimi 10\left(-\frac{4}{5}\right) bħala frazzjoni waħda.

$$40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)$$

Immultiplika 10 u -4 biex tikseb -40.

$$40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)$$

Iddividi -40 b'5 biex tikseb-8.

$$40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)$$

Ikkombina -8n u 8n biex tikseb 0.

$$40n^{2}+2\left(-\frac{4}{5}\right)$$

Esprimi 2\left(-\frac{4}{5}\right) bħala frazzjoni waħda.

$$40n^{2}+\frac{2\left(-4\right)}{5}$$

Immultiplika 2 u -4 biex tikseb -8.

$$40n^{2}+\frac{-8}{5}$$

Frazzjoni \frac{-8}{5} tista' tinkiteb mill-ġdid bħala -\frac{8}{5} bl-estrazzjoni tas-sinjal negattiv.

$$40n^{2}-\frac{8}{5}$$