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Model F: The sum of the real numbers that satisfy the equation √(x² - x -1)² = 1 is equal to: Ⓐ -2 Ⓑ -1 Ⓒ 0 Ⓓ 1 Ⓔ 2 00:00 Reading the Statement and Interpreting the Question 01:36 Setting Up the Equations of the Possible Solutions 02:11 Calculating the Roots of the Two Equations 03:50 Like, Comment and Share 04:39 End #espcex #espcexpreviousexams #mathematics #solvedquestion #commentedquestion #competition #military #functions