Question

Ayúdame con los dos ejercicios
x1=4;,x2=-3/2
x1=4+√ 15; x2=4-√15

Answer 1

Para x1 = 4 y x2 = - 3 / 2
x² - (4 + (-3/2))x + 4*(-3/2) = 0
x² - (4*2/2 - 3/2)x - 12/2 = 0
x² - (8/2 - 3/2)x - 6 = 0
x² - 5x/2 - 6 = 0

Para x1 = 4 + √15 y x2 = 4 - √15
x² - ((4 + √15) - (4 - √15))x + (4 + √15)(4 - √15) = 0
x² - (4 + √15 - 4 + √15)x + 4² - (√15)² = 0
x² - 2√15x + 16 - 15 = 0
x² - 2√15c + 1 = 0