Solve the quadratic equation 5x2+75x=0

Question

by factoring out the GCF.(1 point)
Responses

The solutions are x=0
and x=15
.
The solutions are x equals 0 and x equals 15 .

The solutions are x=0
and x=5
.
The solutions are x equals 0 and x equals 5 .

The solutions are x=−15
and x=−5
.
The solutions are x equals negative 15 and x equals negative 5 .

The solutions are x=−15
and x=0
.

Answer 1

To solve the quadratic equation \( 5x^2 + 75x = 0 \) by factoring out the greatest common factor (GCF), we first identify the GCF. In this equation, the GCF is \( 5x \).

We can factor the equation as follows:

\[ 5x(x + 15) = 0 \]

Now we can set each factor equal to zero:

1. \( 5x = 0 \) → \( x = 0 \)
2. \( x + 15 = 0 \) → \( x = -15 \)

Thus, the solutions to the equation are:

\[ x = 0 \quad \text{and} \quad x = -15 \]

The correct response is:

The solutions are \( x = 0 \) and \( x = -15 \).