To obtain the distributed Expression
A.
4(x + 3)
We will expand by multiplying each term in the bracket by 4
=> 4 X x + 4 X 3
=> 4x + 12
B.
5 (2 + 10m + 4)
WE will also multiply each term by 5
=> 5 X 2 + 5 X 10m + 5 X 4
=> 10 + 50 M + 20
Upon collecting like terms to simplify the expression
=> 50M + 30
C.
a (8 + a) + 3a
We then Re-arrange by collecting like terms