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Mathematics

Answered

Find a ⋅ b.

a = 9i + 5j, b = 4i + 3j

Answer :

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Answer:

Step-by-step explanation:

51

<13, 8>

<36, 15>

-21

Answer Link

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9i+5j x 4i+3j
Factor
=9i+20ij+3j
= (9+20j)i+3j
=3j+(9+20j)i =answer

Answer Link

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