So to multiply this out (x-5)(-.025x +220)
X*-.025x, x*220, 5*-.025x, -5*220
-.025x^2 + 219.875x -1100
I am pretty sure the middle term should be 221.125x because you can’t decide when to/not include the negative sign before the five.
(x - 5)(-.025x + 220)
Is the answer -.025x^2 + 220x - 1100
OR
-.025x^2 + 219.875x - 1100
I keep getting the first answer but in class the teacher said the answer was the second one and I'm getting frustrated because I can't get the second one!
3 answers
oh dear....
(x - 5)(-.025x + 220)
= -.025x^2 + 220x + .125x - 1100
= -.025x^2 + 220.125x - 1100
(x - 5)(-.025x + 220)
= -.025x^2 + 220x + .125x - 1100
= -.025x^2 + 220.125x - 1100
REINY --
I'm sorry - yes, that is what I keep getting too -- I had sooooo many answers written down all over my paper and then I typed the wrong one - thank you!
I'm sorry - yes, that is what I keep getting too -- I had sooooo many answers written down all over my paper and then I typed the wrong one - thank you!