Answer:
Step-by-step explanation:
1) 3*7
2) a*4
3) m*m
4) (4*x)+(4*1)
5) (7*d)+(7*4)
6) (y*y)+(y*3)
7) 1+x
8) d+4
9) y+3
11) Area as Sum: 7d+28, Area as Product 7(d+4)
12) Area as Sum: y(y)+3, Area as Product y(y+3)
13) 5m+10
14) 8y+16
15) -3m-12
16) a^2+3a
17) h^2 2h
18) 2m^2+8m
19)-2z-16
20)-4x^2-40
21) (12x)(60), Area as Sum: 12x+60, Area as Product 12(x+60)
22) (x)(4), Area as Sum: 5x+20, Area as Product 5(x+4)
