henrybat5000 henrybat5000

22-10-2018
Mathematics

contestada

What number must you add to complete the square? x^2+14x=-5

A. 14

B. 28

C. 7

D. 49

Respuesta :

jimrgrant1 jimrgrant1

22-10-2018

D

since the coefficient of the x² term is 1, then

add (half the coefficient of the x-term )² to both sides

that is ([tex]\frac{14}{2}[/tex])² = 49

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