Nomer 2&3 beserta cara lengkapnya di kertas

2) x^2 + ax - 2a^2 = 0 => x1 + x2 = -b/a = -a/1 = -a
x1 + 2x2 = 1
x1 + x2 + x2 = 1
-a + x2 = 1
x2 = a + 1 => x = a + 1
x^2 + ax - 2a^2 = 0
(a + 1)^2 + a(a + 1) - 2a^2 = 0
a^2 + 2a + 1 + a^2 + a - 2a^2 = 0
3a + 1 = 0
3a = -1

3) x1 = (2p + 3) dan x2 = (2p - 1)
x^2 - 6x + (3a + 2) = 0
x1 + x2 = -b/a
(2p + 3) + (2p - 1) = -(-6)/1
4p + 2 = 6
4p = 4
p = 1
x1 . x2 = c/a
(2p + 3)(2p - 1) = (3a + 2)/1
(2.1 + 3)(2.1 - 1) = 3a + 2
(5)(1) = 3a + 2
3 = 3a
a = 1