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Simplify 2x^2-7x-4/x^2-5x+4 What are the excluded values

User Sam Willis
by
8.2k points

2 Answers

6 votes

Answer:

x = 1

Explanation:

Given


(2x^2-7x-4)/(x^2-5x+4) ← factor numerator and denominator

=
((x-4)(2x+1))/((x-4)(x-1)) ← cancel (x - 4) on numerator/ denominator

=
(2x+1)/(x-1)

The denominator of the rational expression cannot be zero as this would make it undefined. Equating the denominator to zero and solving gives the value that x cannot be.

x - 1 = 0 ⇒ x = 1 ← excluded value

User Guesser
by
8.0k points
1 vote

Answer:

On edge it is D, 1 and 4

Explanation:

Why was it impossible to find this answer

User Monokrome
by
7.9k points

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