Answer: -6 +/- = x
Explanation:
y = x² + 12x - 5
+5 +5
y + 5 = x² + 12x
+ 36 +36 added (12 ÷ 2)² to both sides
y + 41 = (x + 6)²
To find the zeros, let y = 0:
0 + 41 = (x + 6)²
= x + 6
-6 -6
-6 +/- = x
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