ada yg mau tolong gk?
pliss..
pliss..
6y² - 9y - 4 = 0
(6y + 2) (y - 2)
6y + 2 = 0
6y = -2
y = -2/6
y = -1/3 = a
y-2 = 0
y = 2 = b
A. a² + b²
= (-1/3)² + (2)²
= 1/9 + 4
= 4 1/9
B. b/a + a/b
= (2 / -1/3) + (-1/3 / 2)
= -6/1 + (-1/3 x 1/2)
= -6 + (-1/6)
= -36/6 - 1/6
= -37/6
= -6 1/6
C. (a-b)²
= (-1/3 - 2)²
= (-1/3 - 6/3)²
= (-7/3)²
= -49/9
= -5 4/9
[answer.2.content]