Adding Zeros vectors within a matrix

I have a 3x3 matrix of values ex

A=[ 1 2 3;

4 5 6;

7 8 9]

I need it to add zeros at certain locations with in the matrix to make a 5x5 with zeros in the 3rd and 4th row and column ex

A2=[1 2 0 0 3;

4 5 0 0 6;

0 0 0 0 0;

0 0 0 0 0;

7 8 0 0 9]

my first attempt was concatenate but I can't figure out how to move the values correctly

newA=[A,zeros(3,2)]

newA_1=[newA;zeros(2,5)]

Answer 1

[Walter Roberson]

A2 = zeros(5,5);
A2([1:2, 5], [1:2, 5]) = A;

[Kevin Smith]

Thank you so much. I didn't expect that to be simple.