2a^2+4a+1 is equivalent to 4a+4/2a*a^2/a+1
Answer:
Sample space: {1,2,3,4,5,6}
All equally likely to occur
If Jiri is x, Pamela is x -5, and tehri ages combined would be 35 so;
x + x-5 = 35
collect the like terms
2x-5 = 35
add five to both sides
2x= 40
divide both sides by 2
x=20
Jiri's age is 20
