Question

-a•(-b)•(-c)•(-d) -5a•6b•(-0.3c)-3m•(-8k)4•(-2x)•(3y)-0,5•(-3m)•(-0,2m)0,6•5c•(-20)3 ab•2•(-5mn)2a•(-3b)•4​

Answer 1

$-a\cdot(-b)\cdot(-c)\cdot(-d)=abcd\\-5a\cdot6b\cdot(-0.3c)=9abc\\-3m\cdot(-8k)=24km\\4\cdot(-2x)\cdot(3y)=-24xy\\-0,5\cdot(-3m)\cdot(-0,2m)=-0,3m^2\\0,6\cdot5c\cdot(-20)=-60c\\3ab\cdot2\cdot(-5mn)=-30abmn\\2a\cdot(-3b)\cdot4=-24ab$

Answer 2

It seems like you've provided a series of mathematical expressions, and you'd like me to simplify them. Let's simplify each expression step by step:

1. -a•(-b)•(-c)•(-d): Since all the factors are negative, the result will be positive: -a•(-b)•(-c)•(-d) = abcd

2. -5a•6b•(-0.3c): Multiply the numbers and simplify: -5a•6b•(-0.3c) = -30ab•c

3. -3m•(-8k)4•(-2x)•(3y): The expression seems to have a formatting issue with "4." Assuming you meant to write "-3m•(-8k)•4•(-2x)•(3y)," you can proceed as follows: -3m•(-8k)•4•(-2x)•(3y) = 24mkx3y

4. -0.5•(-3m)•(-0.2m): Multiply the numbers and simplify: -0.5•(-3m)•(-0.2m) = 0.3m²

5. 0.6•5c•(-20)3: Again, there seems to be a formatting issue with "3." Assuming you meant to write "0.6•5c•(-20)•3," you can proceed as follows: 0.6•5c•(-20)•3 = -180c

6. ab•2•(-5mn): Multiply the numbers and simplify: ab•2•(-5mn) = -10abmn

7. 2a•(-3b)•4: Multiply the numbers and simplify: 2a•(-3b)•4 = -24ab

So, here are the simplified expressions:

1. abcd
2. -30ab•c
3. 24mkx3y
4. 0.3m²
5. -180c
6. -10abmn
7. -24ab