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Complete the square. Fill in the number that makes the polynomial a perfect-square quadratic. p^2 − 4p +

Respuesta :

Answer:

+ 4

Step-by-step explanation:

given

p² - 4p +

To complete the square

add ( half the coefficient of the p- term )² to p² - 4p

p² + 2(- 2)p + (- 2)²

= p² - 4p + 4

= (p - 2)² ← a perfect square

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