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Suppose x(1) and x(2) are the roots of the equation.
Sum of them is :
[tex]x(1) + x(2)[/tex]
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Hint :
Remember from now on ,
[tex]x(1) + x(2) = - \frac{b}{a} \\ [/tex]
Which :
[tex]b = x \: \: \: coefficient[/tex]
And ,
[tex]a = {x}^{2} \: \: \: coefficient[/tex]
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So ;
[tex]x(1) + x(2) = - \frac{ 35}{1} \\ [/tex]
[tex]x(1) + x(2) = - 35[/tex]
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