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Help!

 

How do you know that x2-10x=8 is a quadratic equation?

ManuelBautista2019  Feb 28, 2018
 #1
avatar+12756 
+2

Because it is of the form  ax^2 + bx +c = 0

Re-arranging your equation:

x^2-10x-8 = 0    a=1   b = -10  c = -8

ElectricPavlov  Feb 28, 2018
 #2
avatar+1317 
+2

so we can say it is because it has three terms?

ManuelBautista2019  Feb 28, 2018
 #3
avatar+12756 
+2

No...'c' could be 0

 

Because it is of the form  ax^2 + bx +c = 0  

     all it needs is to be degree 2   (one term is squared) , as in x^2

ElectricPavlov  Feb 28, 2018
edited by ElectricPavlov  Feb 28, 2018
 #4
avatar+1317 
+2

Thank you!!

ManuelBautista2019  Feb 28, 2018

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