Question
Use the quadratic formula to solve the equation. Give exact answers:
2x^2 -1 = 6x.
The choices are:
a) -3 + square root(7)/2, -3 - square root(7)/2
b) 3 + square root(11)/2, 3 - square root(11)/2
c) 3 + square root(7)/2, 3 - square root(7)/2
d) -3 + square root(11)/2, -3 - square root(11)/2
I attempted this problem but got none of these answers! Could you please walk me through the problem and tell me which answer is correct? Thank you so much! :)
2x^2 -1 = 6x.
The choices are:
a) -3 + square root(7)/2, -3 - square root(7)/2
b) 3 + square root(11)/2, 3 - square root(11)/2
c) 3 + square root(7)/2, 3 - square root(7)/2
d) -3 + square root(11)/2, -3 - square root(11)/2
I attempted this problem but got none of these answers! Could you please walk me through the problem and tell me which answer is correct? Thank you so much! :)
Answers
Damon
2 x^2 - 6 x - 1 = 0
x = [ 6 +/- sqrt (36 + 8) ] / 4
x = [ 6 + /- sqrt (44) ] / 4
x = [ 6 + /- 2 sqrt (11) ] / 4
x = [ 3 +/- sqrt(11) ] / 2 so b
x = [ 6 +/- sqrt (36 + 8) ] / 4
x = [ 6 + /- sqrt (44) ] / 4
x = [ 6 + /- 2 sqrt (11) ] / 4
x = [ 3 +/- sqrt(11) ] / 2 so b
Billy
4ã7+3ã3
kulani
2x^2-1=6x
2x^2-6x-1=0
a b c and then solve by using the quadratic formula
2x^2-6x-1=0
a b c and then solve by using the quadratic formula
Nobody
2009??? Everyone here must be in their 20s-30s. Nothing's changed much from then tho <3
Hello future students that might find this from years later! (I doubt anyone would see this but) my insta is @jaineykeyes if you ever want to know what I was like or what I do at the time of you seeing this! (I'm stuck and obsessed with the past if it isn't obvious enough)
Hello future students that might find this from years later! (I doubt anyone would see this but) my insta is @jaineykeyes if you ever want to know what I was like or what I do at the time of you seeing this! (I'm stuck and obsessed with the past if it isn't obvious enough)