Réitigh x^93-1

$$x ^ { 93 } - 1$$

Fachtóirigh

$$\left(x-1\right)\left(x^{30}+x^{29}+x^{28}+x^{27}+x^{26}+x^{25}+x^{24}+x^{23}+x^{22}+x^{21}+x^{20}+x^{19}+x^{18}+x^{17}+x^{16}+x^{15}+x^{14}+x^{13}+x^{12}+x^{11}+x^{10}+x^{9}+x^{8}+x^{7}+x^{6}+x^{5}+x^{4}+x^{3}+x^{2}+x+1\right)\left(x^{62}+x^{31}+1\right)$$

Céimeanna Réitigh

Athscríobh x^{93}-1 mar \left(x^{31}\right)^{3}-1^{3}. Is féidir an riail seo a úsáid chun difríocht na gciúbanna a fhachtóiriú: a^{3}-b^{3}=\left(a-b\right)\left(a^{2}+ab+b^{2}\right).

$$\left(x^{31}-1\right)\left(x^{62}+x^{31}+1\right)$$

Mar shampla x^{31}-1. Faoi theoirim na fréimhe cóimheasta, bíonn fréamhacha cóimheasta iltéarmaigh i bhfoirm \frac{p}{q}, nuair a roinneann p an téarma seasta -1 agus nuair a roinneann q an chomhéifeacht thosaigh 1. Sampla de fhréamh den saghas sin is ea 1. Roinn an t-iltéarmach ar x-1 lena fhachtóiriú.

$$\left(x-1\right)\left(x^{30}+x^{29}+x^{28}+x^{27}+x^{26}+x^{25}+x^{24}+x^{23}+x^{22}+x^{21}+x^{20}+x^{19}+x^{18}+x^{17}+x^{16}+x^{15}+x^{14}+x^{13}+x^{12}+x^{11}+x^{10}+x^{9}+x^{8}+x^{7}+x^{6}+x^{5}+x^{4}+x^{3}+x^{2}+x+1\right)$$

Athscríobh an slonn iomlán fachtóirithe. Níl na hiltéarmaigh seo fachtóirithe; níl aon fhréamhacha cóimheasta acu: x^{30}+x^{29}+x^{28}+x^{27}+x^{26}+x^{25}+x^{24}+x^{23}+x^{22}+x^{21}+x^{20}+x^{19}+x^{18}+x^{17}+x^{16}+x^{15}+x^{14}+x^{13}+x^{12}+x^{11}+x^{10}+x^{9}+x^{8}+x^{7}+x^{6}+x^{5}+x^{4}+x^{3}+x^{2}+x+1,x^{62}+x^{31}+1.

$$\left(x-1\right)\left(x^{30}+x^{29}+x^{28}+x^{27}+x^{26}+x^{25}+x^{24}+x^{23}+x^{22}+x^{21}+x^{20}+x^{19}+x^{18}+x^{17}+x^{16}+x^{15}+x^{14}+x^{13}+x^{12}+x^{11}+x^{10}+x^{9}+x^{8}+x^{7}+x^{6}+x^{5}+x^{4}+x^{3}+x^{2}+x+1\right)\left(x^{62}+x^{31}+1\right)$$

Luacháil

$$x^{93}-1$$