SOLUTION: Did I complete this correctly? 4x^4 - 3xy^3 when x = -1 and when y = -2 I got: 4x^4 - 3xy^3 4 . 1 +(3.-8) 4 + -24 = -20

Algebra ->  Signed-numbers -> SOLUTION: Did I complete this correctly? 4x^4 - 3xy^3 when x = -1 and when y = -2 I got: 4x^4 - 3xy^3 4 . 1 +(3.-8) 4 + -24 = -20      Log On


   

Question 56465: Did I complete this correctly?
4x^4 - 3xy^3

when x = -1 and
when y = -2
I got:
4x^4 - 3xy^3
4 . 1 +(3.-8)
4 + -24
= -20
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
You got the correct answer, this is the way that your teacher wants to see it:
4x%5E4+-+3xy%5E3, x=-1, y=-2
4%28-1%29%5E4-3%28-1%29%28-2%29%5E3
4%281%29-3%28-1%29%28-8%29
4-24
= -20
Happy Calculating!!!