Question

calcula el triple de la suma de las raices de la ecuacion 2x² -14x + 12= 0

Answer 1

2x² - 14x + 12 = 0 :(2)
x² - 7x + 6 = 0
/\ = (-7)² - 4.1.6
/\ = 49 - 24
/\ = 25
x = (-b+/- \/ /\) / 2a
x = (-(-7)+/- \/25)/2
x = (7+/-5)/2
x' = (7+5)/2 = 12/2 = 6
x" = (7-5)/2 = 2/2 = 1
Soma das raízes = 6+1 = 7
O triplo da soma = 3 x 7 = 21

Answer 2

Ola Stacy

2x² - 14x + 12 = 0

a = 2 , b = -14, c = 12

soma S = -b/a = 14/2 = 7

triplo 3*7 = 21