Скоротити дріб : (12а^10 b^2)/(16a^5 b^6 )

[tex]\frac{12a^{10}b^{2}}{16a^{5}b^{6}} = \frac{3a^{10}b^{2}}{4a^{5}b^{6}} = \frac{3a^{5}b^{2}}{4b^{6}} = \frac{3a^{5}}{4b^{4}}[/tex]

(2*a+3*b)/(4*a^2+4*a*b-3*b^2)=-1/(b-2*a)

1)0,04^(-2) - 0,008^(-1) + 0,08^(-2)-0,2^(-4)=

  = 1/0,04^(2) - 1/0.008 + 1/0.08^(2) - 1/0.2^(4)=

  = 1/0.016 - 125 + 1/0.0064 - 1/0.0016 = -125 + 156.25=31.25

2)3,6*10^6

      * 5*10^4 = 3.6 * 10^6 / (9*10^8) * 5*10^4 =

    (3*10^4)^2

= 18*10^10 / (9*10^8) = 2*10^2=200