Answer:
a)
2(x+1) +3 (x+2)
2x +2 + 3x +6
5x + 8
b)
4(x+3) +2(x +7)
4x+12 + 2x +14
6x+26
c)
5(x+3) +2(x+7)
5x+15 +2x+14
7x +29
d)
8(x+10) +2(x+4)
8x+80 +2x+8
10x+88
Step-by-step explanation:
Answer:
the 3rd
Step-by-step explanation:
because n^2+3n+2n simplifies to n(n+5), which is not equivalent to 6n
