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

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