Question

Tính :

a) \(\left(-3\right).\left(-4\right).\left(-5\right)\)

b) \(\left(-5+8\right).\left(-7\right)\)

c) \(\left(-6-3\right).\left(-6+3\right)\)

d) \(\left(-4-14\right):\left(-3\right)\)

Answer 1

a) ( − 3 ) . ( − 4 ) . ( − 5 )=-60

b) ( − 5 + 8 ) . ( − 7 )=-21

c) $\left(-6-3\right).\left(-6+3\right)$=27

d) $\left(-4-14\right):(-3)=6$

Answer 2

a) \(\left(-3\right).\left(-4\right)\left(-5\right)\) = \(12.\left(-5\right)\) = \(-60\)

b) \(\left(-5+8\right).\left(-7\right)\) = \(3.\left(-7\right)\) = \(-21\)

c) \(\left(-6-3\right).\left(-6+3\right)\) = \(-9.\left(-3\right)\) = 27

d) \(\left(-4-14\right):\left(-3\right)\) = \(-18:\left(-3\right)\) = 6

Answer 3

a, (-3) . (-4) . ( -5) = -60

b, (-5+8) . ( -7 ) = 3 . (-7)

= -21

c, ( -6 - 3 ) . ( -6 + 3 ) = -9 . (-3 )

= 27

d, ( -4 - 14 ) : ( -3 ) = -18 : (-3)

= 6