contestada

Which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 + 2x – 1 into the quadratic formula below?

Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction

Respuesta :

Answer:

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

[tex]ax^2+bx+c=0[/tex]

is equal to

[tex]x=\frac{-b(+/-)\sqrt{b^2-4ac} }{2a}[/tex]

in this problem we have

[tex]4x^2 + 2x - 1=0[/tex]

so

[tex]a=4[/tex]

[tex]b=2[/tex]

[tex]c=-1[/tex]

substitute in the formula

[tex]x=\frac{-2(+/-)\sqrt{2^2-4(4)(-1)} }{2(4)}[/tex]

therefore

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

michaelhughes48

Answer:

Its a

Step-by-step explanation:

No need to read all that lol

Otras preguntas