a)
(√8 do potęgi 3 - √25) * 2
(\sqrt8)^3-\sqrt{25})*2=(8\sqrt8-5)*2=(8*2\sqrt2-5)*2=2(16\sqrt2-5)
b)
√27^3 - (-2)^2 =27\sqrt{27}-4=27\sqrt{9*3}-4=27*3\sqrt3-4=81\sqrt3-4
c) √16 : (-2) do potęgi 2 =4:4=1
d)
(√8^3 + √9) * (-3)^2=
(\sqrt8+\sqrt9)*(-3)^2=(8\sqrt{8}+3)*9=(8*2\sqrt2+3)*9=9(3+16\sqrt2)