Solve the quadratic equation using the Quadratic Formula: 3x^2 – 2x – 2 = 0

February 6th, 2011 @3:10 am

the answer is 0. that was way too easy

February 6th, 2011 @3:57 am

A=3

B=-2

C=-2

Answersx=1.215 or -.548

February 6th, 2011 @4:55 am

Your equation is already in the right format:

ax² + bx + c = 0

Your specific values are:

a = 3

b = -2

c = -2

Now plug that into the quadratic formula:

…… -b ± sqrt( b² – 4ac)

x = ————————–

……………… 2a

…… -(-2) ± sqrt( (-2)² – 4(3)(-2) )

x = ————————————–

……………… 2(3)

…… 2 ± sqrt( 4 – (-24) )

x = ————————–

……………… 6

…… 2 ± sqrt( 28 )

x = ——————

…………… 6

…… 2 ± sqrt( 4 * 7 )

x = ———————

…………… 6

…… 2 ± 2 sqrt( 7 )

x = ——————–

…………… 6

…… 1 ± sqrt( 7 )

x = —————–

…………… 3

So your answers are:

x = (1+?7) / 3 ? 1.21525

x = (1-?7) / 3 ? -0.54858

February 6th, 2011 @5:52 am

I’m relaxing here . . . why would I want to solve an equation as that ?

Another thought . . . questions as this posted during the school year often draw my mind to wonder if the person asking the question is a student trying to cheat and have another think and do their homework for them.

Additional note . . . I just looked at you past questions and they are about you asking the answer to some math equation. Trying to get others to do your homework?

.

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February 6th, 2011 @6:16 am

3x^2 – 2x -2 = o

a x^2 -b x – c = o

x = 2 + or – (square root of 4 +24 ) / 6

x = (2 +/ – 5.3) / 6

x = 7.3/6 or -3.3/6

x = 1 and 13/6 or -11/20

dunno really not good at math