hasil dari √8+√32-√18 adalah....
a. 2√2
b. 3√2
c. 4√2
d. 5√2![]()
a. 2√2
b. 3√2
c. 4√2
d. 5√2
Jawaban:
[tex] \sqrt{8} + \sqrt{32} - \sqrt{18} [/tex]
[tex] = \sqrt{ {2}^{2} \times 2 } + \sqrt{ {4}^{2} \times 2 } - \sqrt{ {3}^{2} \times 2 } [/tex]
[tex] = 2 \sqrt{2} + 4 \sqrt{2} - 3 \sqrt{2} [/tex]
[tex] = 6 \sqrt{2} - 3 \sqrt{2} [/tex]
[tex] = 3 \sqrt{2} [/tex]
Jawaban:
(B) 3√2
Penjelasan dengan langkah-langkah:
[tex] \sqrt{8} + \sqrt{32} - \sqrt{18} [/tex]
[tex] = \sqrt{4 \times 2} + \sqrt{4 \times 4 \times 2} - \sqrt{9 \times 2} [/tex]
[tex] = 2 \sqrt{2} \: + 4 \sqrt{2} - 3 \sqrt{2} [/tex]
[tex] = 6 \sqrt{2} - 3 \sqrt{2} [/tex]
[tex] \boxed{ = 3 \sqrt{2}} [/tex]
Opsi: B
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