To solve the quadratic equation \( 5x^2 + 75x = 0 \) by factoring out the greatest common factor (GCF), we first identify the GCF of the terms in the equation.
The GCF is \( 5x \).
Now, we can factor out \( 5x \):
\[ 5x(x + 15) = 0 \]
Setting each factor equal to zero gives us:
- \( 5x = 0 \) → \( x = 0 \)
- \( x + 15 = 0 \) → \( x = -15 \)
Thus, the solutions to the equation are \( x = 0 \) and \( x = -15 \).
So, the correct response is:
The solutions are \( x = -15 \) and \( x = 0 \).