Answer:
4
Step-by-step explanation:
a and a+1 are consecutive integers
2(a+1)-5=a; 2a+2-5=a; a=5-2=3; a+1=3+1=4
5x (3x +2)
15x² + 10X
I think the answer is
1/9, 1/2, 0.35, 0.25, 0.1