Jawablah dengan caranya kak Makasih

2) x1² + x2² = 5
(x1 + x2)² - 2x1.x2 = 5
(-b/a)² - 2(c/a) = 5
(-p/1)² - 2(-3p + 1 / 1) = 5
p² + 6p - 2 - 5 = 0
p² + 6p - 7 = 0
(p + 7)(p - 1) = 0
p = -7 dan p = 1

3) D = 0
b² - 4ac = 0
{-(p - 2)}² - 4(1)(p + 1) = 0
p² - 4p + 4 - 4p - 4 = 0
p² - 8p = 0
p(p - 8) = 0
p = 0 dan p = 8

4) ²log x + ²log y³ = 13
pangkat 3 pindahkan ke depan
²log x + 3.²log y = 13
²log x - ²log y = 5
------------------------------ _
4.²log y = 8
²log y = 8/4
²log y = 2
y = 2² = 4
²log x - ²log 4 = 5
²log x - 2 = 5
²log x = 5 + 2
²log x = 7
x = 2^7 = 128
x + y = 128 + 4 = 132

itu saja cukup