tolong ya............ ini apaaaaaa

1) Diketahui a=216 = 6*6*6 = 6^3, b=25 = 5*5 = 5^2, c=3
    a^(2/3) * b^(1/2) * c^(-2) = 216^(2/3) * 25^(1/2) * 3^(-2)
= (6³)^2/3 * (5²)^1/2 * (1/3)^2 = 6^(3*[2/3]) * 5^(2*[1/2]) * (1/3*1/3)
= 6^6/3 * 5^2/2 * 1/9 = 6^2 * 5^1 * 1/9 = (6*6)*(5)*(1/9)
= 36*5*(1/9) = 4*5 = 20
Jawaban = D

2) Diketahui
    x = (gr) tepung terigu                  660 x + 2 (1 per 4) y + 480 z
    y = (sdt) ragi instan                     330 x + 2 (1 per 4) y + 120 z
    z = (mL) air

Tambahan: 2 (1 per 4) = 2+1/4 = 2+0,25 = 2.25
Jawaban = D
Bukti = Bentuk matriks didapat jika: (Lanjutan, di gambar)