What are the solutions to the equation 3x^2+30x=-87 ?

The solutions to the equation 3x^2+30x=-87 are x=-5+2i,x=-5-2i

Find the zeros of 3x^2+30x=-87

The zeros of 3x^2+30x=-87 are x=-5+2i,x=-5-2i

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3 x^{2} + 30 x = - 87

x = - 5 + 2 i, x = - 5 - 2 i

Solution steps

3 x^{2} + 30 x = - 87

Move

87

to the left side

3 x^{2} + 30 x + 87 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 30 \pm 3 0 ^{2} - 4 \cdot 3 \cdot 87}{2 \cdot 3}

Simplify

3 0^{2} - 4 \cdot 3 \cdot 87 : 12 i

x_{1, 2} = \frac{- 30 \pm 12 i}{2 \cdot 3}

Separate the solutions

x_{1} = \frac{- 30 + 12 i}{2 \cdot 3}, x_{2} = \frac{- 30 - 12 i}{2 \cdot 3}

x = \frac{- 30 + 12 i}{2 \cdot 3} : - 5 + 2 i

x = \frac{- 30 - 12 i}{2 \cdot 3} : - 5 - 2 i

The solutions to the quadratic equation are:

x = - 5 + 2 i, x = - 5 - 2 i

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

∣ x ∣ \leq - 2

5 x - [7 - (2 x - 1)] = 3 (x - 5) + 4 (x + 3)

- 2 y < - 8

3 - ∣ 3 - 5 x ∣ = - 2

What are the solutions to the equation 3x^2+30x=-87 ?
The solutions to the equation 3x^2+30x=-87 are x=-5+2i,x=-5-2i
Find the zeros of 3x^2+30x=-87
The zeros of 3x^2+30x=-87 are x=-5+2i,x=-5-2i