1)
(-0,5а⁻² b⁴)⁻⁵ = (-1/2)⁻⁵ * a⁻²*⁽⁻⁵⁾ * b⁴*⁽⁻⁵⁾ = - 2⁵ а¹⁰b⁻²⁰ =-32a¹⁰b⁻²⁰
(1/5 * x⁷y⁻⁶ )⁻⁴ = (1/5)⁻⁴ *x⁷*⁽⁻⁴⁾ * y ⁻⁶*⁽⁻⁴⁾ = 5⁴ x⁻²⁸y²⁴ = 625x⁻²⁸y²⁴
2)
1.4a⁻⁶c⁷ * (2/7)a⁵c⁻⁵ = (14/10 * 2/7) a⁻⁶⁺⁵ c⁷⁺⁽⁻⁵⁾ = 0.4a⁻¹c²
при а =0,4 ; с = -0,1
0,4 *(0,4⁻¹) *(-0,1)² = 0,4 * (1/0,4) * 0,01 = 1*0,01 = 0,01
3)
(18х⁵ / у⁻⁷ ) * (у⁻⁴/15х⁻²) = 18х⁵у⁻⁴ / 15х⁻²у⁻⁷ = 1,2 * х⁵⁻⁽⁻²⁾ *у⁻⁴⁻⁽⁻⁷⁾ =
= 1,2х⁵⁺²у⁻⁴⁺⁷ = 1,2х⁷у³
(8/ а⁻⁵b⁴)⁻⁴ * (a⁻⁷b³/4)⁻³ = [ (2³)⁻⁴ /(a⁻⁵*⁽⁻⁴⁾ * b⁴*⁽⁻⁴⁾) ] * [ (a⁻⁷*⁽⁻³⁾ *b³*⁽⁻³⁾ )/(2²)⁻³] =
= (2⁻¹²a⁻²¹b⁻⁹)/ (2⁻⁶ a²⁰b⁻¹⁶ ) = 2⁻¹²⁻⁽⁻⁶⁾ *a⁻²¹⁻²⁰ *b⁻⁹⁻⁽⁻¹⁶⁾ = 2⁻¹²⁺⁶ a⁻⁴² b⁻⁹⁺¹⁶=
= 2⁻⁶a⁻⁴² b⁵
1)
(-0.2 a⁻⁶b³)⁻⁴ = (-1/5)⁻⁴ a⁻⁶*⁽⁻⁴⁾ b³*⁽⁻⁴⁾ = 5⁴ a²⁴b⁻¹² = 625a²⁴b⁻¹²
(1/2 *x⁹y⁻⁴)⁻⁵ = 2⁵ x⁻⁴⁵y²⁰ = 32x⁻⁴⁵y²⁰
2)
2.4a⁻⁴c⁹ * (3/8)a⁶c⁻¹⁰ = 0.9a²c⁻¹
при а = 0,2 ; с = - 0,9
0,9 * 0,2² * (-0,9)⁻¹ = - 1 * 0,04 = - 0,04
3)
(24/ х⁻⁴у⁶) * (х⁻³у⁻⁷/18) = (4/3) * х¹у⁻¹³ = 1 целая 1/3 * ху⁻¹³
(3а⁷/b⁻⁶)⁻⁵ * (b⁻⁹ / 27a⁹)⁻² = (3⁻⁵a⁻³⁵ / b³⁰ ) * ( b¹⁸ / 3⁻⁶a⁻¹⁸ ) =
= 3¹ a¹⁷ b⁻¹² = 3a¹⁷b⁻¹²