Question

Which shows the correct substitution of the values a,b,and c from the equation 0=4x^2+2x-1 into the quadratic formula below

Answer 1

Answer:

the answer is b on ed

Step-by-step explanation:

Answer 2

Given quadratic equation : $0 = 4x^2+2x- 1$

Let us apply standard quadratic form $0=ax^2+bx+c$

We know, quadratic formula

$x = \frac{-b+-\sqrt{b^2-4ac}}{2a}$

a = 4

b = 2

c= -1

Now we plug in all the values in quadratic formula

$x = \frac{-b+-\sqrt{b^2-4ac}}{2a} \\ x = \frac{-2+-\sqrt{2^2-4(4)(-1)}}{2(4)}\\ x = \frac{-2+-\sqrt{18}}{8}$.

The above one is the substitution of values of a,b,c in quadratic formula.