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05-03-2019
Mathematics

contestada

What number should be added to the expression x^2 + 6x to change the it into a perfect square trinomial?
options
6 , 3 , 9 , 12
(Can choose multiple answers)

Respuesta :

05-03-2019

Answer:

9

Step-by-step explanation:

(A+B)^2 = A^2 + 2AB + B

X^2 + 6X + 9 = (X + 3) (X + 3)

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