Question

1)-0.4x^2y*(-10xy^2) 2)-0,2a^3b^4*5a^2b^3 3)(0.25x^-2y^-1)^-34) x^-3a^4 4) x^-3a^4 4 ( ^-2 * -3 16 x^-2a^3 5)ab(-5ab^2)*(4a^2b)6)m^2n*(-mn)*(-mn^2) 6)m^2n*(-mn)*(-mn^2)

Answer 1

$-0.4x^2y(-10xy^2)=4x^3y^3 \\\ -0,2a^3b^4\cdot 5a^2b^3=-a^5b^7$

$(0.25x^{-2}y^{-1})^{-3}) x^{-3}a^4 =0.25^{-3}a^{6}y^{3}x^{-3}a^4=0.25^{-3}a^{10}y^{3}x^{-3}$

$( \frac{1}{16} )^2\cdot ( \frac{4}{x^{-2}a^3} )^{-3}= \frac{1}{256} \cdot \frac{x^{-6}a^9}{64} = \frac{a^9}{16384x^6}$

$ab(-5ab^2)(4a^2b)= -20a^4b^4 \\\ m^2n*(-mn)*(-mn^2)= m^4n^4$