What are the solutions to the equation 8x^2-2x=15 ?

The solutions to the equation 8x^2-2x=15 are x= 3/2 ,x=-5/4

Find the zeros of 8x^2-2x=15

The zeros of 8x^2-2x=15 are x= 3/2 ,x=-5/4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

8 x^{2} - 2 x = 15

x = \frac{3}{2}, x = - \frac{5}{4}

Decimal Notation

x = 1.5, x = - 1.25

Solution steps

8 x^{2} - 2 x = 15

Move

15

to the left side

8 x^{2} - 2 x - 15 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 2 ) \pm ( - 2 ) ^{2} - 4 \cdot 8 ( - 15 )}{2 \cdot 8}

(- 2)^{2} - 4 \cdot 8 (- 15) = 22

x_{1, 2} = \frac{- ( - 2 ) \pm 22}{2 \cdot 8}

Separate the solutions

x_{1} = \frac{- ( - 2 ) + 22}{2 \cdot 8}, x_{2} = \frac{- ( - 2 ) - 22}{2 \cdot 8}

x = \frac{- ( - 2 ) + 22}{2 \cdot 8} : \frac{3}{2}

x = \frac{- ( - 2 ) - 22}{2 \cdot 8} : - \frac{5}{4}

The solutions to the quadratic equation are:

x = \frac{3}{2}, x = - \frac{5}{4}

3 b^{2} + 18 b + 17 = b

- 4 x^{2} + 64 x + 256 = 0

12 = x^{2}

x (2 x - 3) = 14

2 x^{2} = 1 - 2 x

What are the solutions to the equation 8x^2-2x=15 ?
The solutions to the equation 8x^2-2x=15 are x= 3/2 ,x=-5/4
Find the zeros of 8x^2-2x=15
The zeros of 8x^2-2x=15 are x= 3/2 ,x=-5/4