Question

me ayudan es para hoy x favor​

Answer 1

x² + 2x - 5 = 75

x² + 2x - 5 - 75 = 0

x² + 2x - 80 = 0

x = -b ± √b² - 4ac / 2a

x = -2 ± √2² - 4 (1) (-80) / 2

x = -2 ± √4 - (-320)/ 2

x = -2 ± √4 + 320/2

x = -2 ± √324/2

x = -2 ± 18 /2

x1 = -2 + 18/2 = 7

x2 = -2 - 18/2 = -11

6x² - 6 = 0

6x² = 6

x² = 6/6

x² = √6/6

x = ±√6/6

x = ± 1

x1 = -1

x2 = 1

4x² - 36 = 0

4x² = 36

x² = 36/4

x² = √36/4

x = ±√36/4

x = ± 9

x1 = 9

x2 = -9

Espero haberte ayudado. Suerte en los estudios ≧◠◡◠≦.