Question

Someone help me with Matrices, please.

Answer 1

For this I got (2 -12 7)
(-1 -2 2)
But this isn't an answer choice it wants me to compute B-A

Answer 2

you cant add or subtract a 3*2 matrice with a 2*2 matrice

Answer 3

Thank you I wasn't aware of that.

Answer 4

in order to add/subtract one matrix from the other, we work them by like elements: its rather impossible to add a row1col3 elements from one matrix with a non existing row1col3 element from another matrix.

Answer 5

Yeah, i forgot about that. x3

Answer 6

What about this one. Find -3A+6B
A=(-3 5 -6) B=(-2 6 7)
(9 -5 3) (2 -1 -6)
Do I multiply -3 with A and 6 with B?

Answer 7

Exactly :)

Answer 8

^^ Thank you.