The given equation is $9x^2 + 2(3+2)x + 1 = 0$. We need to solve for $x$.

AlgebraQuadratic EquationsQuadratic FormulaSolving Equations
2025/8/9

1. Problem Description

The given equation is 9x2+2(3+2)x+1=09x^2 + 2(3+2)x + 1 = 0. We need to solve for xx.

2. Solution Steps

First, simplify the equation. Since 3+2=53+2 = 5, the equation becomes:
9x2+2(5)x+1=09x^2 + 2(5)x + 1 = 0
9x2+10x+1=09x^2 + 10x + 1 = 0
Now, we can use the quadratic formula to solve for xx. The quadratic formula is:
x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
In our equation, a=9a = 9, b=10b = 10, and c=1c = 1. Plugging these values into the quadratic formula, we get:
x=10±1024(9)(1)2(9)x = \frac{-10 \pm \sqrt{10^2 - 4(9)(1)}}{2(9)}
x=10±1003618x = \frac{-10 \pm \sqrt{100 - 36}}{18}
x=10±6418x = \frac{-10 \pm \sqrt{64}}{18}
x=10±818x = \frac{-10 \pm 8}{18}
So, we have two possible solutions for xx:
x1=10+818=218=19x_1 = \frac{-10 + 8}{18} = \frac{-2}{18} = -\frac{1}{9}
x2=10818=1818=1x_2 = \frac{-10 - 8}{18} = \frac{-18}{18} = -1

3. Final Answer

The solutions are x=19x = -\frac{1}{9} and x=1x = -1.