# quadratic formula am i wrong or the book?Watch

#1
x^2 - 4x + 1

i got

2+sqrt6 and 2-sqrt6

book has 2+sqrt3 and 2-sqrt3
0
7 years ago
#2
the book is definitely right, sorry :P
0
7 years ago
#3
The book answers look right to me.

If you post your working, I might be able to see where you've gone wrong.
0
7 years ago
#4
You can check your answer you know. Just expand and see if you get the original equation out.
0
7 years ago
#5
2+(1/2)sqrt12 = 2+(1/2)sqrt3*sqrt4
= 2+(1/2)sqrt3*2
= 2+sqrt3
0
#6
what I did was

4+-sqrt16-4
/
2

=

4+-sqrt12
/
2

= 2+sqrt 6 and 2-sqrt6 =/
0
#7
nvm figured it out, problem i made was i didnt do sqrt4x3 instead of just halving sqrt12 =/
0
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