Question

You are solving a quadratic by using the quadratic formula what needs to be done to this function before we can identify a, b, and c? 7x^2 + 2x =4
A. The quadratic first needs to be factored
B. The equation needs to be set equal to zero
C. We need to add 4 on both sides of the equation
D. The like terms need to be combined

Answer 1

To use the quadratic formula, the equation must be set in the standard form \( ax^2 + bx + c = 0 \). In this case, the equation given is \( 7x^2 + 2x = 4 \).

To apply the quadratic formula, we need to move all terms to one side of the equation, setting the equation equal to zero. Therefore, we can subtract 4 from both sides to accomplish this.

So the correct answer is:
**B. The equation needs to be set equal to zero.**

After setting it to zero, the equation would be:
\[ 7x^2 + 2x - 4 = 0 \]
From there, you can identify \( a = 7 \), \( b = 2 \), and \( c = -4 \).