Homework: 7.1 Homework Score: 0 of 1 pt 7.1.25 80118 (6 complete) | Find all val

Question

Homework: 7.1 Homework Score: 0 of 1 pt 7.1.25 80118 (6 complete) | Find all values of the variable for which the rational expression is undefined 7x x +2x-3 Select the correct choice below and, if necessary, ill in the answer box to complete your choice O A. The expression is undefined at x O B. There is no value of x for which the rational expression is undefined. Use a comma to separate answers as needed.) Click to select and enter your answer(s) and then click Check Answer All parts showing Clear Ail

Explanation / Answer

7x / ( x^2 + 2x -3 )

factoring x^2 + 2x - 3

( x + 3 ) ( x- 1) = 0

x+3 = 0

x = -3

x - 1 = 0

x = 1

the expression is undefined for x = 1 , - 3

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