What are the solutions to the equation 2b^2-30=-7b ?

The solutions to the equation 2b^2-30=-7b are b= 5/2 ,b=-6

Find the zeros of 2b^2-30=-7b

The zeros of 2b^2-30=-7b are b= 5/2 ,b=-6

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

2 b^{2} - 30 = - 7 b

b = \frac{5}{2}, b = - 6

Decimal

b = 2.5, b = - 6

Solution steps

2 b^{2} - 30 = - 7 b

Move

7 b

to the left side

2 b^{2} - 30 + 7 b = 0

Write in the standard form

a x^{2} + b x + c = 0

2 b^{2} + 7 b - 30 = 0

Solve with the quadratic formula

b_{1, 2} = \frac{- 7 \pm 7 ^{2} - 4 \cdot 2 ( - 30 )}{2 \cdot 2}

7^{2} - 4 \cdot 2 (- 30) = 17

b_{1, 2} = \frac{- 7 \pm 17}{2 \cdot 2}

Separate the solutions

b_{1} = \frac{- 7 + 17}{2 \cdot 2}, b_{2} = \frac{- 7 - 17}{2 \cdot 2}

b = \frac{- 7 + 17}{2 \cdot 2} : \frac{5}{2}

b = \frac{- 7 - 17}{2 \cdot 2} : - 6

The solutions to the quadratic equation are:

b = \frac{5}{2}, b = - 6

\frac{15 w ^{3} x ^{5}}{- 9 w ^{5} x ^{2}}

\frac{4}{7} \cdot \frac{4}{2} + \frac{3}{7} \cdot 7

3 k^{2} + 3 k - 3 = 0

- \frac{20}{4}

∣ u ∣ - 14 = - 5

What are the solutions to the equation 2b^2-30=-7b ?
The solutions to the equation 2b^2-30=-7b are b= 5/2 ,b=-6
Find the zeros of 2b^2-30=-7b
The zeros of 2b^2-30=-7b are b= 5/2 ,b=-6