What are the like terms in the algebraic expression?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants. assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1

Charlie tosses five coins. what is the probability that all five coins will land tails up.