themajesty9898 themajesty9898

20-03-2018
Mathematics

contestada

What number should be added to the expression x²+14x to change it into a perfect square trinomial?

7
14
28
49

Respuesta :

jimthompson5910 jimthompson5910

20-03-2018

Answer: D) 49

To get this answer, divide the x coefficient 14 in half to get 7. Then square 7 to get 49.

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