soal no 4 tlg jawab pki cara

3√2 + 5√8 - √32
= 3√2 + 5(√2 × 2 × 2) - (√2 × 2 × 2 × 2 × 2)
= 3√2 + 5(2√2) - (4√2)
= 3√2 + 10√2 - 4√2
= 13√2 - 4√2
= 9√2 (D)