Ответ:

  1. \((2\times x)^2=2^2x^2=4x^2\).
  2. \((3\times y)^3=3^3y^3=27y^3\).
  3. \((a\times b)^4=a^4b^4\).
  4. \((5\times x^2)^2=5^2(x^2)^2=25x^4\).
  5. \((2\times y^3)^3=2^3(y^3)^3=8y^9\).
  6. \((x\times y)^2=x^2y^2\).
  7. \((-1\times a)^3=(-1)^3a^3=-a^3\).
  8. \((-2\times b)^2=(-2)^2b^2=4b^2\).
  9. \((1/2\times x)^2=(1/2)^2x^2=x^2/4\).
  10. \((0,1\times y)^3=(0,1)^3y^3=0,001y^3\).