Solve each of the following by using the quadratic formula.

Question

anonymous · Answer

1) x2 - 3x + 2 = 0

anonymous · Answer

$$x=\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }$$For you, a=1, b=-3, and c=2.

It's just plug-and-chug.

anonymous · Answer

Remember the formula of a polynomial:
$$ax ^{2}+bx+c$$

anonymous · Answer

when do I put the square root on windows calculator?

anonymous · Answer

attachment

anonymous · Answer

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

anonymous · Answer

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$$\frac{ 3-1 }{ 2 }$$

anonymous · Answer

so you used -3 as 3 to solve x

anonymous · Answer

I guess I get it now thanks

anonymous · Answer

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