Jawaban:
1. (2√5 - 3√2)(2√5 + 3√2) =
(2√5 × 2√5) + (2√5 × 3√2) - (3√2 × 2√5) - (3√2 × 3√2)
= 4(5) + 6√10 - 6√10 - 18 = 20 - 18 = 2.
2. 4√6 (√8 - √18) + 18√3 = 4√6(2√2 - 3√2) + 18√3 = 4√6(-√2) + 18√3 = -4√12 + 18√3 = -4√(4 * 3) + 18√3 = -8√3 + 18√3 = 10√3
Penjelasan dengan langkah-langkah:
maaf klok salah
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Jawaban:
1. (2√5 - 3√2)(2√5 + 3√2) =
(2√5 × 2√5) + (2√5 × 3√2) - (3√2 × 2√5) - (3√2 × 3√2)
= 4(5) + 6√10 - 6√10 - 18 = 20 - 18 = 2.
2. 4√6 (√8 - √18) + 18√3 = 4√6(2√2 - 3√2) + 18√3 = 4√6(-√2) + 18√3 = -4√12 + 18√3 = -4√(4 * 3) + 18√3 = -8√3 + 18√3 = 10√3
Penjelasan dengan langkah-langkah:
maaf klok salah