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what is the sum of the roots of the quadratic equation x²+2x+1=0​

Sagot :

Reader99idn

Answer:

-2

Step-by-step explanation:

the formula of the roots of the quadratic equation is -b/a

[tex] - (2) \div 1 \\ = - 2[/tex]

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Question:

  • What is the sum of the roots of the quadratic equation [tex]x^{2} +2x+1 = 0[/tex]?

Solution:

[tex]\begin{array} {l, r}x^{2} +2x+1 = 0 & (x+1)(x+1)\\x+y=2 : xy=1 & (x+1)^{2} \\x=1 : y=1 & x = -1\end{aligned}[/tex]

Answer:

         [tex]x=-1[/tex]

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Note: The answer is correct.