im having trouble working out c in this formula The method of completing the square can be used to write the expression: 5x^2+20x-12 in the form a(x+b)^2+c where a, b and c are constants. What is the value of c?
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Originally Posted by offahengaway and chips im having trouble working out c in this formula The method of completing the square can be used to write the expression: 5x^2+20x-12 in the form a(x+b)^2+c where a, b and c are constants. What is the value of c? can you work from here? find that so that the thing in the parenthesis is a perfect square..
Still a bit confused here, is r=c?
Originally Posted by offahengaway and chips Still a bit confused here, is r=c? Now, finish up.
Just to double check is c= -32?
yes, it is -32.
In general, for with , we have ...................._ ...................._ ...................._
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