Physics, asked by nivyaferdinand0505, 10 months ago

A=2i+3j,B=i+j-k,find A×B

Answers

Answered by ssdhruv666

1

Answer:

2i²+5ij+3j²

Explanation:

A=2i+3j

B=i+j

A*B=?

=(2i+3j)*(i+j)

=2i(i+j)+ 3j(i+j)

=(2i*i+2i*j) + (3j*i+3j*j)

=2i²+2ji+3ij+3j²

=2i²+5ij+3j²

Ans- 2i²+5ij+3j²

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