natalieg310 natalieg310
  • 25-05-2020
  • Mathematics
contestada

What number should be added to both sides of the equation to complete the square?
x² + 8x = 4
4
8
16
32

Respuesta :

jimrgrant1 jimrgrant1
  • 25-05-2020

Answer:

16

Step-by-step explanation:

Given

x² + 8x = 4

To complete the square

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

x² + 2(4)x + 16 = 4 + 16, thus

(x + 4)² = 20 ← equivalent equation

Answer Link

Otras preguntas

Why did Herbert Hoover push so strongly for the creation of trade associations?
what is the perimter of this tile 1 by 4
Which graph or equation represents a nonproportional relationship?
tom is a scientist who is obserbing the rise of sea levels every year. how much of a rise in sea levels would tom observe in any one year? a 0.5-1mm b 1-2mm c
A constitutional monarchy provides what power to a monarch?
What’s 8X +15 equals 63
4x + 5y = -28 -4x – 7y = 28
Best Buy is displaying 15 laptops for a big store sale. The laptops include 6 identical​ Dells, 4 identical​ Chromebooks, and 5 identical Macbooks. They must al
The circumference of an oil tank is 55 ft. Find the radius.
Find dy/dx for y= 4^lnx