Which statement describes the first step to solve the equation by completing the square?

4x^2 + 16x = 20

multiply both sides of the equation by 1/4

add 64 to each side of the equation

add 8 to each side of the equation

multiply both sides of the equation by 1/8

see explanation

Step-by-step explanation:

Given

4x² + 16x = 20

To complete the square we require the coefficient of the x² term to be 1

Divide all terms on both sides by 4 or by the listed statements

multiply both sides of the equation by to obtain

x² + 4x = 5

The process of completing the square can now be performed.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.