3xy - 4xy =

6x²y - 7x² y² =

-2ab - (-sab) =

10mn³ - (-5mn³ =​

Which expression is equivalent to 3^3 + 2^2?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?