Bentuk sederhana dari √18 + √72 - 4√2 adalah
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[tex] \sqrt{18} + \sqrt{72} - 4 \sqrt{2} [/tex]
[tex] = \sqrt{9 \times 2} + \sqrt{36 \times 2} - 4 \sqrt{2} [/tex]
[tex] = \sqrt{3^{ 2} \times 2} + \sqrt{6^{ 2} \times 2} - 4 \sqrt{2} [/tex]
[tex] = \sqrt{3^{ \cancel{ 2}} \times 2} + \sqrt{6^{ \cancel{2 }} \times 2} - 4 \sqrt{2} [/tex]
[tex] = 3 \sqrt{2} + 6 \sqrt{2} - 4 \sqrt{2} [/tex]
[tex] = (3 + 6 - 4) \sqrt{2} [/tex]
[tex] = (9 - 4) \sqrt{2} [/tex]
[tex] = 5 \sqrt{2} [/tex]
[answer.2.content]
