The expression would be 5D + 4
Answer: B
Step-by-step explanation: 6^2 = 36
36*4= 144
144-7= 137
Answer:
1) 68
/ \
4 17
/\
2 2
68=2*2*17
2) 104
4 26
/\ /\
2 2 2 13
104=2*2*2*13
3) 78
2 39
3 13
78=2*3*13
4) 225
9 25
3 3 5 5
225=3*3*5*5
Second Part:
1) 45
3 15
3 5
45=3*3*5
2) 70
2 35
5 7
70=2*5*7
3) 54
9 6
3 3 2 3
54=3*3*2*3
4) 126
3 42
3 14
7 2
126=3*3*7*2
