Question

What is the first step in solving the quadratic equation x^2-40=0

Answer 1

First step would be to add 40 to both sides
x^2 - 40 = 0...add 40 to both sides
x^2 = 40....then u would take the sqrt of both sides
x = (+ - )sqrt 40
x (+ - ) 2 sqrt 10

Answer 2

Answer:

Option B is correct

adding 40 to both sides of the equation

Step-by-step explanation:

Given the quadratic equation:

$x^2-40 = 0$

Addition property of equality states that you add a number to both sides of an equation.

Add 40 to both sides of an equation in [1] we have;

$x^2-40+40= 0+40$

Simplify:

$x^2=40$

Therefore, the  first step in solving the given quadratic equation is,  

adding 40 to both sides of the equation