SOLUTION: Could someone please help me find the constant term that should be added to make the following expression a perfect-square trinomial. {{{x^2+7x}}}

Question 102612: Could someone please help me find the constant term that should be added to make the following expression a perfect-square trinomial.
Found 2 solutions by jim_thompson5910, edjones:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation

Take half of the x coefficient 7 to get 3.5 (ie )
Now square 3.5 to get 12.25 (ie )

Add this result 12.25 to the current expression.

Now the expression is a perfect square trinomial.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!

divide the 2nd term in half and square it.
7/2=3.5
3.5^2=12.25
x^2+7x+12.5 Ans.
Ed
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