<PRE><B>Question 200374</B>
(x^2 - 4x + 1) - (-8x^2 + 2x - 6) - (x^2 + 3x + 3/5)
x^2 - 8x^2 - x^2 - 4x + 2x + 3x + 1 - 6 + 3/5  (Error!!)
.
You MUST distribute the negative sign to ALL terms within the ():
(x^2 - 4x + 1) - (-8x^2 + 2x - 6) - (x^2 + 3x + 3/5)
Distributing negative to terms in second ():
(x^2 - 4x + 1) + 8x^2 - 2x + 6 - (x^2 + 3x + 3/5)
Distributing negative to terms in last ():
(x^2 - 4x + 1) + 8x^2 - 2x + 6 - x^2 - 3x - 3/5
x^2 - 4x + 1 + 8x^2 - 2x + 6 - x^2 - 3x - 3/5
Grouping terms:
x^2 + 8x^2 - x^2 - 4x - 2x - 3x + 1 + 6 - 3/5
8x^2 - 9x + 1 + 6 - 3/5
8x^2 - 9x + 5/5 + 30/5 - 3/5
8x^2 - 9x + 35/5 - 3/5
8x^2 - 9x + 32/5


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