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# Let$f(x) = \left\{ \begin{array}{cl} 2x + 7 & \text{if } x < -2, \\ -x^2 - x + 1 & \text{if } x \ge -2. \end{array} \right.$

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Find the sum of all values of $$x$$ such that $$f(x) = -5.$$

Dec 9, 2020

#1
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2x + 7 = -5

x = -6

-x^2 - x + 1 = -5

-x^2 - x + 6 = 0

x = -3, x = 2

Sum of solution is (-6) + (-3) + 2 = -7.

Dec 9, 2020
#2
0

sorry but it is incorrect

Dec 10, 2020
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