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Your answer is D for your purposes

Work:
Multiply b and 5
Multiply b and 1
The b just gets copied along.

5b evaluates to 5b

Multiply b and 6
Multiply b and 1

6b evaluates to 6b
6b-10 evaluates to 6b-10
Multiply 5b by 6b-10
Multiply 5b by each term in 6b-10 term by term.

This is the distributive property of multiplication.

Multiply 5b and 6b
Multiply the b and b
Multiply b and b

Combine the b and b by adding the exponents, and keeping the b, to get b²

5b × 6b =

Multiply 5b and -10
Multiply b and 1

5b × -10 = -50b

5b(6b-10)

The final answer is 30b²-50b

Your answer is D for your purposes


Work:

Multiply b and 5

Multiply b and 1

The b just gets copied along.


5b evaluates to 5b


Multiply b and 6

Multiply b and 1


6b evaluates to 6b

6b-10 evaluates to 6b-10

Multiply 5b by 6b-10

Multiply 5b by each term in 6b-10 term by term.


This is the distributive property of multiplication.


Multiply 5b and 6b

Multiply the b and b

Multiply b and b


Combine the b and b by adding the exponents, and keeping the b, to get b²


5b × 6b =


Multiply 5b and -10

Multiply b and 1


5b × -10 = -50b


5b(6b-10)


The final answer is 30b²-50b

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