henrybat5000 henrybat5000
  • 22-10-2018
  • Mathematics
contestada

What number must you add to complete the square x^2+12x =16

A. 24

B. 12

C. 6

D. 36

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 30-12-2018

Answer:

D. 36

Step-by-step explanation:

The square of half the x-coefficient must be added. That value is (12/2)² = 36.

_____

You're trying to create a trinomial of the form ...

... (a + b)² = a² +2ab +b²

where a = x, and 2b = 12.

The number you need to add is b² = (2b/2)² = (12/2)² = 36.

Answer Link
josiahedness
josiahedness josiahedness
  • 05-11-2020

Answer:

D. 36 is the answer .. (ap ex)

Step-by-step explanation:

Answer Link

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