(√a+3 + √a-3)²= (√a)²+(3)²+(√a)²-(3)²,jadi a+9+a-9. jadi a² yakkkkk
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(√a+3 + √a-3)²= (√a)²+(3)²+(√a)²-(3)²,jadi a+9+a-9. jadi a² yakkkkk