Question

solve a matrix for x

Answer 1

\[\left[\begin{matrix}3x & 3 \\ x & 4\end{matrix}\right]\]

Answer 2

=5x+4

Answer 3

wat is it?

Answer 4

The question?

Answer 5

the question is so nonsense. please, post the original one

Answer 6

\[\left[\begin{matrix}3x & 3 \\ x & 4\end{matrix}\right]=5x+4\] i don't know how to solve for x

Answer 7

from my work book

Answer 8

oh, it's not that, it is determinant, not a matrix

Answer 9

oh sorry

Answer 10

it says solve for x if determinant of the matrix = 5x+4
det (A) = 3x*4 - x*3 = 9x = 5x+4 --> 4x =4 --> x =1
so that, the matrix is \(\left[\begin{matrix}3&3\\1&4\end{matrix}\right]\)

Answer 11

thank you!