# aglebra2

More Options: Make a Folding Card

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• library
• Well have to do problems 1-4 on the worksheet posted on google classroom
• Why?? I don't understand why can't you just divide by a
• Lets look at number one... it says "X^2+10x+16=0" first, you'll multiply a*c
• The equation is stated as you said "ax^2+bx+c".. Let work on number one together. Can you please hand me a piece of blank of paper, thank you
• library
• common factors 4*4 8*2 -4*-2
• There are plenty of factors for 16 some are: 4*4 8*2 -4*-4 -8*-2 -16*-1
• 1) x2+10x+16=0
• The common factor of 16 that will add up to 10 is 8 and 2!
• what two numbers would multiply to equal 16 but also add up to 10?
• Now the next step is to find common factors of (a*c)  but add up to "b." In this case, what are the common factors of 16
• library
• oohhh then what next ??
• common factors 4*4 8*2 -4*-2
• 1) x2+10x+16=0
• b a*c
• #/a            #/a
• Now all you have to do write the correct factors that add up to 10 in the correct spot.
•   Now draw an "x" on your sheet.  This is how it suppose to look.
• Ana is confused on how to solve the equation as Eric begins to show her. The problem is x^2+10x+16=0 Step. Multiply a*c   :   1*16
• library
• ooohh so it would be (x+2)(x+8)
• Now just plug the terms now just plug the outcome of #/a  (x+___)(x+____)
• Eric asks Ana to find the common factors of 16 that add up to 10
• Library
• so now just take the opposite of what's inside the parentheses
• The common factors that add up to 10 is 8 and 2
• The end
• well now we understand (they both laugh)
• There answer is almost there, (x+2)(x+8)
• 10  16
• 8/1                     2/1
• the x-method is only used on some quadratic equations not all.
• sooo thats the answer!! wow thank you
• 10  16
• 8/1                     2/1
• Thank YOUUU
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