SOLUTION: evaluate x^2 + xy^3 + xy if x = - 1/3 and y = -1/2

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Question 64700This question is from textbook An Incremental Development
: evaluate
x^2 + xy^3 + xy if x = - 1/3 and y = -1/2 This question is from textbook An Incremental Development

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+xy^3+xy
(-1/3)^2+(-1/3*-1/2^3)+(-1/3*-1/2)
1/9+(-1/3*-1/8)+(1/6)
1/9+(1/24)+1/6
1/9+1/24+1/6 now we need to find a common denominator for these three terms so we can add them
factors of 9 =3*3
factors of 6=3*2
factors of 24=2*2*2*3 combining common factors (using triplicate & duplicate factors only once) we have 3*3*2*2*2=72
(8+3+12)/72
23/72 solution