Question

Tentukan nilai X
sertakan caranya

Answer 1

Misal: 3+√5 =A; 3-√5=B

X^2 = (b√a+ a√b)^2
= ab^2+ 2ab√ab+a^2b (substitusikan)
=12-4√5+16+12+4√5
=40

jadi x=√40.