1) = 25m^2 + 30m + 9 - 25m^2 - 29m +1 = m + 10
2) = 25d^2 -9 - (25d^2+30+9) = 25d^2-9-25d^2-30d-9 = -30d-18
1)25m^2+30m+9-25m^2-29m+1
30m+9-29m+1
1m=10
m=0.1
