Question 400427: 3a2b+2a2b2 + -ab2+a2b2
Answer by jsmallt9(3758)   (Show Source):
You can put this solution on YOUR website! I am guessing that the 2's which follow variables are exponents. In the future, use "^" to indicate exponents:
3a^2*b + 2a^2b^2 + (-ab^2) + a^2b^2
And put the exponent in parentheses if it has more than one term or factor.
I'm also assuming that the problem is to simplify the expression. Please tells us more than just expressions and/or equations and/or inequalities. Tell us what is supposed to be done (simplify, factor, solve, graph, rationalize, rewrite with positive exponents, rewrite with fractional exponents, rewrite in radical form, etc.)
Tutors are more likely to help if your problem is clear.
Only like terms can be added. Like terms< have the same number of variables (including none). If like terms have variables, then each variable has the same name and exponent in each term.
All your terms have two variables and they are named "a" and "b" in each term. But the exponents a's and/or b's are not the same except for the second and fourth terms. So those two terms are the only terms we can add together.
Adding like terms is done by simply adding the coefficients (the numbers in front). The exponents do not change when adding or subtracting! The coefficient of the second term is 2 and the coefficient of the fourth term, since it is not visible, is 1. Adding 2 and 1 we get 3. This is the new coefficient for the added terms:
None of the remaining terms are not like terms so no more adding can be done.
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