Tolong jawab semua soalnya pakai cara yaaa

1.a. Banyak suku = 4suku (m^2,n^2,mn,17)
b. Variabel = m,n,mn
c. Koefisien = 3,2,1
d. Konstanta = 17

2.a. 4t+5u-6+2t+7
=> 6t+5u+1
b. 12p+5q+5p+5q-12
=> 17p+10q-12

3.a. 25y x 4
=> 100y
b. 2a^2+10a-3a-15
=>2a^2+7a-15