brandonking542 brandonking542

14-07-2020
Mathematics

contestada

Solve for x. Write both solutions, separated by a comma. 8x^2+7x-1=0

Respuesta :

Stephen46 Stephen46

27-07-2020

Answer:

x = 1/8 , - 1

Step-by-step explanation:

8x² + 7x - 1 = 0

Rewrite 7x as a difference

That's

8x² + 8x - x - 1 = 0

Factorize

8x( x + 1) - ( x + 1) = 0

(8x - 1)( x + 1) = 0

8x - 1 = 0 x + 1 =0

8x = 1 x = - 1

x = 1/8

The solutions are

x = 1/8 , - 1

Hope this helps you

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