What are the solutions to the equation 5x^2+21x+9=5,5x^2+21x+9=5 ?

The solutions to the equation 5x^2+21x+9=5,5x^2+21x+9=5 are x=-1/5 ,x=-4

Find the zeros of 5x^2+21x+9=5,5x^2+21x+9=5

The zeros of 5x^2+21x+9=5,5x^2+21x+9=5 are x=-1/5 ,x=-4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

5 x^{2} + 21 x + 9 = 5, 5 x^{2} + 21 x + 9 = 5

x = - \frac{1}{5}, x = - 4

Decimal Notation

x = - 0.2, x = - 4

Solution steps

5 x^{2} + 21 x + 9 = 5

Move

5

to the left side

5 x^{2} + 21 x + 4 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 21 \pm 2 1 ^{2} - 4 \cdot 5 \cdot 4}{2 \cdot 5}

2 1^{2} - 4 \cdot 5 \cdot 4 = 19

x_{1, 2} = \frac{- 21 \pm 19}{2 \cdot 5}

Separate the solutions

x_{1} = \frac{- 21 + 19}{2 \cdot 5}, x_{2} = \frac{- 21 - 19}{2 \cdot 5}

x = \frac{- 21 + 19}{2 \cdot 5} : - \frac{1}{5}

x = \frac{- 21 - 19}{2 \cdot 5} : - 4

The solutions to the quadratic equation are:

x = - \frac{1}{5}, x = - 4

- 6 x^{2} + 24 x - 30 = 0

- 4.9 x^{2} + 26 x = 0

8^{2} + x^{2} = 6^{2}

x^{2} + b x - 18 = 0

5 z^{2} - 8 (- 3) z - 46 z + 5 (- 3)^{2} + 30 (- 3) + 62 = 0

What are the solutions to the equation 5x^2+21x+9=5,5x^2+21x+9=5 ?
The solutions to the equation 5x^2+21x+9=5,5x^2+21x+9=5 are x=-1/5 ,x=-4
Find the zeros of 5x^2+21x+9=5,5x^2+21x+9=5
The zeros of 5x^2+21x+9=5,5x^2+21x+9=5 are x=-1/5 ,x=-4