Question

Please Help ^-^

Answer 1

if numbers have same variables and same exponent then you can combine them
like
x + 2x <---both have x and same exponent
another example
2p^2+6p^2 both have p and both p have same exponent
for this one x^2 +4x^4 <==this is not like terms
bec both variables have different exponent

Answer 2

so your answer ??

Answer 3

let me know if you didn't understand :) ^.~