Question

Solve each of the following by using the quadratic formula.

Answer 1

1) x2 - 3x + 2 = 0

Answer 2

\[x=\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]For you, a=1, b=-3, and c=2.

It's just plug-and-chug.

Answer 3

Remember the formula of a polynomial:
\[ax ^{2}+bx+c\]

Answer 4

when do I put the square root on windows calculator?

Answer 5

is that how you do it? I havent put the sq root, do I do it seperate or together?

Answer 6

Well, the stuff under the square root is: 1\[(-3)^{2}-4 \times 1 \times 2=1\], and the square root of 1 is just 1.

So then you just have\[\frac{ 3+1 }{ 2 }\]and\[\frac{ 3-1 }{ 2 }\]

Answer 7

so you used -3 as 3 to solve x

Answer 8

I guess I get it now thanks

Answer 9

Well, it's -b, and since b is -3, -(-3) is just 3.