5√2-√32+3√18-2√72= .........

[tex]5 \sqrt{2} - \sqrt{32} + 3 \sqrt{18} - 2 \sqrt{72} \\ = 5 \sqrt{2 } - \sqrt{16.2} + 3 \sqrt{9.2} - 2 \sqrt{36.2} \\ = 5 \sqrt{2} - 4 \sqrt{2} + 3.3 \sqrt{2} - 2.6 \sqrt{2} \\ = 1 \sqrt{2} + 9 \sqrt{2} - 12 \sqrt{2} \\ = 10 \sqrt{2} - 12 \sqrt{2} \\ = - 2 \sqrt{2} [/tex]

Jawabannya:

Mapel : Matematika
Bab : Bentuk Akar dan Pangkat
Sub Bab : Bentuk Akar

Pembahasan:

5√2 - √32 + 3√18 - 2√72
= 5√2 - √(16.2) + 3√(9.2) - 2√(36.2)
= 5√2 - 4√2 + 9√2 - 12√2
= 1√2 + 9√2 - 12√2
= 10√2 - 12√2
= -2√2 → Jwbnya

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