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liubo4ka [24]
2 years ago
15

Solve by using factorizing method:4x²-36x+81=0​

Mathematics
1 answer:
boyakko [2]2 years ago
8 0

Answer:

  • x = 4.5

Step-by-step explanation:

  • 4x² - 36x + 81 = 0​
  • (2x)² - 2*2x*9 + 9² = 0           Identity  a² - 2ab + b² = (a - b)²
  • (2x - 9)² = 0
  • 2x - 9 = 0
  • 2x = 9
  • x = 4.5

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