Question

Tolong nomer 3 beserta cara dong

Answer 1

P(x/2) = x^2 + 2x + 3

x/2 = x'
x = 2x'

p(x) = (2x)^2 + 2(2x) + 3
= 4x^2 + 4x + 3

p(2x) = 4
4(2x)^2 + 4(2x) + 3 = 4
4.4x^2 + 8x + 3 - 4 = 0
16x^2 + 8x - 1 = 0

a = 16
b = 8
c = -1

x1 + x2 = -b/a
= -8/16
= -1/2