Factorizar?
Factorizar. Ayuda! 1 : 12r² + 17r - 5 2 : - 9x² - 3x + 2 3 : 6x² + 11x + 3 4 : 15x² - xy - 2y².
0Laperyulisaratita
En resumen
1 : 12r ^ {2} + 17r - 5 = 0 144r ^ {2} + 17(12r) - 60 = 0 (12r + 20)(12r - 3) = 0 12r + 20 = 0 12r - 3 = 0 12r = - 20 12r = 3 r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-20%7D%7B12%7D%20" /> r = <img src="https://tex.z-dn.net/?
Mejor respuesta
Tomasvento321
1 : 12r ^ {2} + 17r - 5 = 0 144r ^ {2} + 17(12r) - 60 = 0 (12r + 20)(12r - 3) = 0 12r + 20 = 0 12r - 3 = 0 12r = - 20 12r = 3 r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-20%7D%7B12%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B12%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-5%7D%7B3%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B4%7D%20" />
2 : - 9r ^ {2} - 3r + 2 = 0 - 81r ^ {2} - 3( - 9r) - 18 = 0 ( - 9r - 6)( - 9r + 3) = 0 - 9r - 6 = 0 - 9r + 3 = 0 - 9r = 6 - 9r = - 3 r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B-9%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-3%7D%7B-9%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B-3%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%20" />
3 : 6r ^ {2} + 11r + 3 = 0 36r ^ {2} + 11(6r) + 18 = 0 (6r + 9)(6r + 2) = 0 6r + 9 = 0 6r + 2 = 0 6r = - 9 6r = - 2 r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-9%7D%7B6%7D%20" /> r = <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B-2%7D%7B6%7D%20" /> r = [img = 10] r = [img = 11].