Question

Question 3(Multiple Choice Worth 2 points)

Answer 1

The solution to the equation are 5 or -1 after applying the quadratic formula.

What is a quadratic equation?

Any equation of the form $\rm ax^2+bx+c=0$  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

It is given that:

x² - 4x² - 5 = 0

The above equation is a quadratic equation:

Using the quadratic formula:

$\rm x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

Plug the values in the formula:

$\rm x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4(1)(-5)}}{2(1)}$

After solving:

x = 5 or -1

Thus, the solution to the equation is 5 or -1 after applying the quadratic formula.

Learn more about quadratic equations here:

brainly.com/question/17177510

#SPJ1