Solve x² + 4x - 12 = 0
Step-by-step solution with detailed explanations
Final Answer
x = 2 or x = -6
Step-by-Step Solution
1
Factor
Need numbers: product -12, sum 4
2
Factors
-2 × 6 = -12, -2 + 6 = 4
3
Solve
(x-2)(x+6) = 0
Expert Insights
Signs matter: Product negative means opposite signs
Sum positive: Larger number is positive
Pro Tip: Product sign tells you if factors have same/different signs