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Ответ

Ответ дан
binamaksimchuk

Ответ:

Пошаговое объяснение:

а) -4b ∙ ( -2а )  = 8ab


б)-1/5 m^2 ∙ ( -45mb )  = 9bm³


в) a ∙ ( -5/6 k ) ∙0,6 = - 0,5ak


г) 6/13 x ∙ ( -0,13y )  = -0,06xy


Ответ

Ответ дан
Kasoms

a) ; -4bcdot (-2a) = (-4cdot (-2))ab = 8ab

b) ; -frac{1}{5} m^{2}cdot (-45mb) = -frac{1}{5} m^{2}cdot (-45bm) = m^{2}cdot (frac{1}{5}cdot -45)bm = (-0,2cdot -45)bm^{3} = \\ = 9bm^{3}

c) ; acdot (-frac{5}{6} k)cdot 0,6 = (0,6cdot frac{5}{6})ak = (frac{6}{10}cdot -frac{5}{6})ak = -frac{30}{60} ak = -frac{1}{2} ak

d) ; frac{6}{13} xcdot (-0,13y) = (frac{6}{13}cdot -frac{13}{100})xy = (frac{3}{1}cdot -frac{1}{50})xy = -frac{3}{50} xy

а) 8ab

б) 9mb³

в) -1/2ak (-0,5ak)

г) -3/50xy (-0,06xy)

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