Solve x² + 9x + 9 = 0 What is the answer and how did you work it out?

asked Oct 9, 2022 69.9k views

5 votes

Solve x² + 9x + 9 = 0

What is the answer and how did you work it out?

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7 votes

Answer:

A)
$x=(-9\pm3√(5))/(2)$

Explanation:

ax^2+bx+c=0

x^2+9x+9=0

$x=(-b\pm√(b^2-4ac))/(2a)$

$x=(-9\pm√(9^2-4(1)(9)))/(2(1))$

$x=(-9\pm√(81-36))/(2)$

$x=(-9\pm√(45))/(2)$

$x=(-9\pm3√(5))/(2)$

Ty Kroll answered Oct 12, 2022

5.6k points

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