Question 1209216
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Notice that the leading coefficient at x^2 is 1.


Apply the Vieta's theorem, which says that the sum of the roots 
of such quadratic equation is the coefficient at x with the opposite sign,
while the product of the roots is the constant terms.


It gives you the coefficient at x  of  -((-5)+5) = -0 = 0

and the constant term of (-5)*5 = -25.


Therefore, the restored equation is  x^2 + 0*x - 25 = 0,  or simply  x^2 - 25 = 0.


<U>ANSWER</U>.  First blank (the coefficient at x) is  0  (zero).

         Second blank (the constant term) is  -25.
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Solved, with explanations.