Question

Thực hiện các phép tính:

a)15.(-2).(-5).(-6)

b)4.7.(-11).(-2)

Giải ra giúp mình nha

Answer 1

Bài giải:

a) 15 . (-2) . (-5) . (-6) = [15 . (-6)] . [(-2) . (-5)] = (-90) . 10 = -900.

b) 4 . 7 . (-11) . (-2) = [4 . 7 . (-2)] . (-11) = (-56) . (-11) = 616.

Answer 2

a ) 15 . ( -2 ) . ( -5 ) . ( -6 )

= [ 15 . ( -6 ) ] . [ ( -2) . ( -5 )]

= -60 . 10

= -600

Answer 3

b ) 4 . 7 . ( -11 ) . ( - 2 )

= ( 4 . 7) . [ -11 . ( - 2 ) ]

= 28 . 22

= 616

Answer 4

\(15\left(-2\right)\left(-5\right)\left(-6\right)\)

\(=15\left(-6\right)\left(-2\right)\left(-5\right)\)

\(=-90.10=-900\)

Answer 5

a) \(15.\left(-2\right).\left(-5\right).\left(-6\right)\)

\(=\text{ }\left[\left(-2\right).\left(-5\right)\right].\text{ }\left[15.\left(-6\right)\right]\)

\(=10.\left(-90\right)\)

\(=-900\)

b) \(4.7.\left(-11\right).\left(-2\right)\)

\(=\text{ }\left[4.7.\left(-2\right)\right].\left(-11\right)\)

\(=\left(-56\right).\left(-11\right)\)

\(=-616\)