What is expand A(7,-1)B(7,4) ?

The solution to expand A(7,-1)B(7,4) is 7(7*4,)AB,-1*(7*4,)AB

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expand A(7,-1)B(7,4)

expand

A (7, - 1) B (7, 4)

7 (7 \cdot 4,) A B, - 1 \cdot (7 \cdot 4,) A B

Solution steps

A (7, - 1) B (7, 4)

= (7, - 1) (7 \cdot 4,) A B

Apply the distributive law:

a (b - c) = ab - a c

a = A B (7, 4), b = 7,, c = 1

= A B (7, 4) \cdot 7, - A B (7, 4) \cdot 1

= 7 (7 \cdot 4,) A B, - 1 \cdot (7 \cdot 4,) A B

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What is expand A(7,-1)B(7,4) ?
The solution to expand A(7,-1)B(7,4) is 7(7*4,)AB,-1*(7*4,)AB