Homework Help: algebra 2

Posted by erin on Wednesday, July 25, 2007 at 10:28pm.

(a-y)+2y3,if a= 2 and y= -3

(2--3)2 + 2(-3)3
(5)2 + (-6)3
25 + -216
-191 either im wrong somewhere or my book doesnt have that answer my choices are -29,43,79,-53

I am assuming that by 2(-3)3 you mean
2(-3)³
you did not follow the order of operation which says exponents before multiplying

that part should then be
2(-27)

so your last line is

25 + (-54)
= -29

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