Jawaban:
151) A
152) C
153) B
Penjelasan dengan langkah-langkah:
151) (-2√5)³
= (-2√5) (-2√5) (-2√5)
= 20 (-2√5)
= -40√5 (option A)
152) (3√5 - 1)²
= (3√5 - 1) (3√5 - 1)
= 45 - 3√5 - 3√5 + 1
= 46 - 6√5 (option C)
153) (2 - √7)²
= (2 - √7) (2 - √7)
= 4 - 2√7 - 2√7 + 7
= 4 - 4√7 + 7
= 11 - 4√7 (option B)
maaf kalau salah
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Jawaban:
151) A
152) C
153) B
Penjelasan dengan langkah-langkah:
151) (-2√5)³
= (-2√5) (-2√5) (-2√5)
= 20 (-2√5)
= -40√5 (option A)
152) (3√5 - 1)²
= (3√5 - 1) (3√5 - 1)
= 45 - 3√5 - 3√5 + 1
= 46 - 6√5 (option C)
153) (2 - √7)²
= (2 - √7) (2 - √7)
= 4 - 2√7 - 2√7 + 7
= 4 - 4√7 + 7
= 11 - 4√7 (option B)
maaf kalau salah