Question

Explain What the mistake is and how it should be fixed.

x^2 – 13x – 41 = 4

Step 1: x^2 – 13x – 36 = 0

Step 2: (x – 9)(x+4) = 0

Step 3: x – 9 = 0 x + 4 = 0

Step 4: x = 9 x = - 4

Answer 1

Explanation:

x² - 13x - 41 = 4

Error in Step 1: -41 - 4 = -45, not -36.