What are the solutions to the equation 7x^2+28x+30=0 ?

The solutions to the equation 7x^2+28x+30=0 are x=-2+isqrt(2/7),x=-2-isqrt(2/7)

Find the zeros of 7x^2+28x+30=0

The zeros of 7x^2+28x+30=0 are x=-2+isqrt(2/7),x=-2-isqrt(2/7)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

7 x^{2} + 28 x + 30 = 0

x = - 2 + i \frac{2}{7}, x = - 2 - i \frac{2}{7}

Solution steps

7 x^{2} + 28 x + 30 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 28 \pm 2 8 ^{2} - 4 \cdot 7 \cdot 30}{2 \cdot 7}

Simplify

2 8^{2} - 4 \cdot 7 \cdot 30 : 214 i

x_{1, 2} = \frac{- 28 \pm 2 14 i}{2 \cdot 7}

Separate the solutions

x_{1} = \frac{- 28 + 2 14 i}{2 \cdot 7}, x_{2} = \frac{- 28 - 2 14 i}{2 \cdot 7}

x = \frac{- 28 + 2 14 i}{2 \cdot 7} : - 2 + i \frac{2}{7}

x = \frac{- 28 - 2 14 i}{2 \cdot 7} : - 2 - i \frac{2}{7}

The solutions to the quadratic equation are:

x = - 2 + i \frac{2}{7}, x = - 2 - i \frac{2}{7}

0 = x^{2} + 8 x + 5

x^{2} + 58 = 9

x^{2} - 14 x + 62 = - 77

25 (1 - 4 x)^{2} - 28 = - 12

x^{2} - 4 x = 4 x

What are the solutions to the equation 7x^2+28x+30=0 ?
The solutions to the equation 7x^2+28x+30=0 are x=-2+isqrt(2/7),x=-2-isqrt(2/7)
Find the zeros of 7x^2+28x+30=0
The zeros of 7x^2+28x+30=0 are x=-2+isqrt(2/7),x=-2-isqrt(2/7)