nomer 13 tolong dibantu ya..

==Jawaban==

(√5 + √2)²
= (√5 + √2)(√5 + √2)
= √25 + √10 + √10 + √4
= 5 + 2√10 + 2
= 7 + 2√10 (A)

(√5+√2)^2
=(√5+√2)(√5+√2)
=√5.√5+√5.√2+√2.√5+√2.√2
=5+2√2.√5+2
=7+2√10.. (A)

smoga membantush_!