Sr Examen
Factorizar el polinomio y^8-y^3
Solución
Factorización
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/ ___________\ / ___________\ / ___________\ / ___________\
| ___ / ___ | | ___ / ___ | | ___ / ___ | | ___ / ___ |
| 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 |
x*(x - 1)*|x + - - ----- + I* / - + ----- |*|x + - - ----- - I* / - + ----- |*|x + - + ----- + I* / - - ----- |*|x + - + ----- - I* / - - ----- |
\ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 /
$$x \left(x - 1\right) \left(x + \left(- \frac{\sqrt{5}}{4} + \frac{1}{4} + i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right)\right) \left(x + \left(- \frac{\sqrt{5}}{4} + \frac{1}{4} - i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right)\right) \left(x + \left(\frac{1}{4} + \frac{\sqrt{5}}{4} + i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right)\right) \left(x + \left(\frac{1}{4} + \frac{\sqrt{5}}{4} - i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right)\right)$$
((((x*(x - 1))*(x + 1/4 - sqrt(5)/4 + i*sqrt(5/8 + sqrt(5)/8)))*(x + 1/4 - sqrt(5)/4 - i*sqrt(5/8 + sqrt(5)/8)))*(x + 1/4 + sqrt(5)/4 + i*sqrt(5/8 - sqrt(5)/8)))*(x + 1/4 + sqrt(5)/4 - i*sqrt(5/8 - sqrt(5)/8))
Unión de expresiones racionales
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3 / 5\ y *\-1 + y /
$$y^{3} \left(y^{5} - 1\right)$$
y^3*(-1 + y^5)
Combinatoria
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3 / 2 3 4\ y *(-1 + y)*\1 + y + y + y + y /
$$y^{3} \left(y - 1\right) \left(y^{4} + y^{3} + y^{2} + y + 1\right)$$
y^3*(-1 + y)*(1 + y + y^2 + y^3 + y^4)