Question

What is the solution of Sqrt -4x = 100? x = –2500 x = –50 x = –2.5 no solution

Answer 1

X = -2500

This is because:

1. -2500 * -4 = 10,000
2. Sqrt of 10,000 is 100

Answer 2

For this case we must find the value of the variable "x" of the following expression:

$\sqrt {-4x} = 100$

Now, we square both sides of the equation:

$-4x = 100 ^ 2\\-4x = 10000$

We divide between -4 on both sides of the equation:

$x = \frac {10000} {- 4}\\x = -2500$

ANswer:

$x = -2500$

Option A