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

Multiply both sides of the equation by 1/4

Step-by-step explanation:

First step: Multiply both sides of the equation by 1/4

You will have:

x^2 +4x = 5

Then add 4 to both sides

x^2 +4x + 4 = 5 + 4

(x + 2)^2 = 9

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)