Question

Jose combined the like terms in the expression. Marc claims that he made a mistake. Negative 8 x squared y minus 17 x y squared + 12 x y minus 8 + 5 x squared y minus x y squared minus 12 x y = negative 3 x squared y minus 18 x y squared + 24 x y minus 8 Jose asks Marc to explain how to fix his error. Which is the best explanation that Marc can give Jose? Jose, you should have added 12 and –12 for the xy terms. Jose, you should have added –8 and –5 for the for the x squared y terms. Jose, you should have added –17 and 1 for the x squared y terms. Jose, you should have added –8 and the two 12s for the xy terms

Answer 1

A

Explanation:

Edg

Answer 2

The explanation Marc can give

Jose is, you should have added 12 and –12 for the xy terms

Explanation:

Josh calculation

-8x^2y-17xy^2+12xy-8+5x^2y-xy^2-12xy=-3x^2y-18xy^2+24xy-8

Correct calculation

-8x^2y-17xy^2+12xy-8+5x^2y-xy^2-12xy

Collect like terms

= -8x^2y+5x^2y-17xy^2-xy^2+12xy-12xy-8

= -3x^2y-18xy^2-8

The explanation Marc can give

Jose is, you should have added 12 and –12 for the xy terms.