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What are the exact solutions of x2 + 5x + 1 = 0 using x equals negative b plus or minus the square root of the quantity b squared minus 4 times a times c all over 2 times a?

x = the quantity of 5 plus or minus the square root of 21 all over 2
x = the quantity of negative 5 plus or minus the square root of 21 all over 2
x = the quantity of 5 plus or minus the square root of 29 all over 2
x = the quantity of negative 5 plus or minus the square root of 29 all over 2

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mhanifa

Answer:

  • B. x = the quantity of negative 5 plus or minus the square root of 21 all over 2

Step-by-step explanation:

  • x² + 5x + 1 = 0
  • x = (-b ± [tex]\sqrt{b^2 - 4ac}[/tex])/ (2a)
  • x = (- 5 ± [tex]\sqrt{5^2 - 4*1*1}[/tex]) / (2*1)
  • x = (- 5 ± [tex]\sqrt{21}[/tex]) /2

Correct choice is B

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