en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3x^2+21x+36=0

Solution

3 x^{2} + 21 x + 36 = 0

Solution

x = - 3, x = - 4

Solution steps

3 x^{2} + 21 x + 36 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 21 \pm 2 1 ^{2} - 4 \cdot 3 \cdot 36}{2 \cdot 3}

2 1^{2} - 4 \cdot 3 \cdot 36 = 3

x_{1, 2} = \frac{- 21 \pm 3}{2 \cdot 3}

Separate the solutions

x_{1} = \frac{- 21 + 3}{2 \cdot 3}, x_{2} = \frac{- 21 - 3}{2 \cdot 3}

x = \frac{- 21 + 3}{2 \cdot 3} : - 3

x = \frac{- 21 - 3}{2 \cdot 3} : - 4

The solutions to the quadratic equation are:

x = - 3, x = - 4

Popular Examples

factor x^2+13x factor

x^{2} + 13 x

factor 6y^3-12y^4x-18y^5 factor

6 y^{3} - 12 y^{4} x - 18 y^{5}

(2x)/7+2/3 = x/(21)+2

\frac{2 x}{7} + \frac{2}{3} = \frac{x}{21} + 2

simplify (10x^4)/(y^{-1)}simplify

\frac{10 x ^{4}}{y ^{- 1}}

simplify (x/y-y/x)/(1/(x^2)-1/(y^2))simplify

\frac{\frac{x}{y} - \frac{y}{x}}{\frac{1}{x ^{2}} - \frac{1}{y ^{2}}}

Frequently Asked Questions (FAQ)

What are the solutions to the equation 3x^2+21x+36=0 ?
The solutions to the equation 3x^2+21x+36=0 are x=-3,x=-4
Find the zeros of 3x^2+21x+36=0
The zeros of 3x^2+21x+36=0 are x=-3,x=-4