Question

Multiply

[4 0]
2 -1 5

now what I am looking at is the two centers the [ and all numbers are inside the [ ] thats just how its set up. Thats the only way I know how to put it.. Im giving more than 10 points for the hassle.

Answer 1

When a matrix is multiplied by a constant, the constant multiplies each of the elements of the matrix.

`2\left[\begin{array}{cc}4&0\\-1&5\end{array}\right]=\left[\begin{array}{cc}2\cdot 4&2\cdot 0\\2\cdot(-1)&2\cdot 5\end{array}\right]\\\\=\left[\begin{array}{cc}8&0\\-2&10\end{array}\right]`