Question

solve x²+32x+420 by completing square​

Answer 1

Answer:

  x² + 32x  - 420 = 0

⇒ x² + 42x - 10x - 420 = 0

⇒ x(x + 42) - 10(x + 42) = 0

⇒ (x + 42) × (x - 10) = 0

⇒ x = -42   OR   x = 10

Explanation:

Answer 2

Answer:

x = -42 or 10

Explanation:

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