Answer: other than 7
Explanation:
Given
Equation is
![x^2+7=x^2+?](https://img.qammunity.org/2022/formulas/mathematics/high-school/4r94w0nv1hatlxs8hplwqcieto3f3p1r50.png)
For an equation to have no solution, the missing number can be any number other than 7
because if we put 7 then it justifies the equation i.e.
while on the other hand for a number other than 7, it does not justify the equation.