What number should be added to both sides of the equation to complete the square?

x2 + 8x = 4

4
8
16
32

16

Step-by-step explanation:

The given equation is

Compare this with

a = 1, b = 8, c=4

Now, in order to complete the square we add both sides by

Thus, we find this value first

Therefore, we add 16 to both sides of the equation to complete the squares.

Third option is correct.

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this