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Jawaban:
Penjelasan dengan langkah-langkah:
" Life is not a problem to be solved but a reality to be experienced! "
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semoga membantu kawan
semangat
Jawaban:
=12 -2√35
Penjelasan dengan langkah-langkah:
(a+b)² = a² + 2ab + b²
=(-√5 + √7)²
=5 + (2.-√5.√7) + 7
=12 + -2√35
=12 -2√35