Jawaban:
Penjelasan dengan langkah-langkah:
23 - √35
(2√5 - √7)(3√5 + √7)
= 2√5×3√5 + 2√5×√7 - √7×3√5 - √7×√7
= 6×5 + 2√35 - 3√35 - √49
= 30 + 2√35 - 3√35 - 7
= 23 + (2 - 3)√35
= 23 - 1√35
= 23 - √35
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Jawaban:
Penjelasan dengan langkah-langkah:
Jawaban:
23 - √35
Penjelasan dengan langkah-langkah:
(2√5 - √7)(3√5 + √7)
= 2√5×3√5 + 2√5×√7 - √7×3√5 - √7×√7
= 6×5 + 2√35 - 3√35 - √49
= 30 + 2√35 - 3√35 - 7
= 23 + (2 - 3)√35
= 23 - 1√35
= 23 - √35