Question

Tolongg nomor 28,29,30 ?

Answer 1

28) 47 - 12 : (-6) × (-2) + (-20)
= 47 - (-2) × (-2) + (-20)
= 47 - 4 - 20
= 23 (A)

29) √18 + 3√50 - 2√8
= 3√2 + 15√2 - 4√2
= 14√2 (B)

30) √24 × √27 × √32
= 2√6 × 3√3 × 4√2
= 6√18 × 4√2
= 24√36
= 24 × 6
= 144 (C)