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19 August, 21:55

Describe the error made in subtracting the two

rational expressions shown

1 1

x-

2x+1

x + 1

x-2

(x-2) (x+1) (x - 2) (x + 1)

(x-2) (x+1)

+2
Answers (1)
  1. 19 August, 22:24
    0
    You must subtract all terms of the numerator being subtracted out, not just the first term.

    The negative 2 should have been subtracted out to get a numerator of x+1-x+2

    The simplified numerator of the difference should be 3, not - 1.
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