+0  
 
+1
405
5
avatar+457 

Post a question that is algebra II level, I need a question to work on

by the way, how do you enter an uppercase sigma on the calculator to calculate sums?

ZZZZZZ  Jun 2, 2017
 #1
avatar+7266 
0

Hmmm...how about...

 

 

Solve for x.

 

ax2 + bx + c = 0

 

 

 

You will need to "complete the square" to get the answer.

I think this is probably algebra II level, but I'm not sure.

Or maybe you've done this already...

hectictar  Jun 2, 2017
 #2
avatar+2190 
+1

I was going to ask the exact same question! I almost typed it out and realized that someone beat me to it. :(

TheXSquaredFactor  Jun 2, 2017
edited by Guest  Jun 2, 2017
 #3
avatar+7266 
0

Wow really! Hey it's a good thing to know how to do! laugh

hectictar  Jun 2, 2017
 #4
avatar+457 
0

It's a basic quadratic function.

 

step1:  ax2+bx+c = 0

It takes a while, but you eventually get to the quadratic formula, x=(-b ± sqrt(b2-4ac)/2a

 

Also, is there a plus/minus button? I just copied the symbol I used off Google.

ZZZZZZ  Jun 2, 2017
 #5
avatar+2190 
0

Here's a system for you:

 

\(-4x+y-2z=-14\)

\(8x-2y+4z=7\)\(2x-4y+z=3\)

TheXSquaredFactor  Jun 2, 2017

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