1. p^2 + q^2 2. 2pq 3. (p + q)^2 4. p = 3 - akar 5 5. q = 3 + akar 5 minta tolong dijawab

p = 3 - √5
q = 3 + √5

p^2 + q^2
=( 3 - √5)^2 + ( 3 + √5)^2
= (9 - 6√5 + 5) + (9+6√5+5)
= 18 + 10
= 28

2pq = 2( 3 - √5)( 3 + √5)
= 2(9 + 3√5 - 3√5 - 5)
= 2(4)
= 8

(p+q)^2
= [( 3 - √5)+( 3 + √5)]^2
=[ (3+3)+(-√5+√5)]^2
= 6^2
= 36