Solve the quadratic equation by using a graphic approach. Round your answer to the hundredths place. x² - 2x - 4= 0
a. x= 3.24 or x = -1.24
c. x = 4.24 or x = -0.24
b. x = 2.73 or x = -0.73
d. x= 5.24or x = -1.24

Pls explain I’m having a hard time understanding the lesson

x = 3.24, x = -1.24

Step-by-step explanation:

The standard form for a quadratic equation is . For your equation a = 1, b = -2, c = -4. The quadratic formula you will be using is .

Plug in a = 1, b = -2, and c = -4 into the formula.

We'll do the top part first:

Apply rule

Apply exponent rule if is even

Multiply the numbers

Add

The prime factorization of 20 is

20 divides by 2. 20 = 10 * 2

10 divides by 2. 10 = 5 * 2

2 & 5 are prime numbers so you don't need to factor them anymore

Apply radical rule

Apply radical rule ;

Because of the you have to separate the solutions so that one is positive and the other is negative.

Positive x:

Apply rule

Multiply

Factor and rewrite it as . Factor out 2 because it is the common term. .

Divide 2 by 2

or (You'll probably have to use a calculator for the square root of 5)

^Repeating the process of positive x for negative x in order to get or