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

Answer Link

Otras preguntas

how do you answer these?

Simplify -7 + [5 + (-12)÷3]

Evaluate 29 • 1 + 2(20 ÷ 4 – 5)

Tobacco smoking is probably the most prevalent modifiable risk factor for ____________

What is the intersection point of Y equals X^2-2x+8 and y=x+6

What is the answer to this question

At a party there were four large submarine sandwiches, all the same size. During the party, 2/3 of the chicken sandwich, 3/4 of the tuna sandwich, 7/12 of the

what type of commensal relationship is orchids growing on branches of trees ?

The sum of two numbers is a hundred one number is at least 16 more than the other number. What are the numbers? Please help

There are two functions that can be used to describe the percent of people 25 years and older who have completed at least high school. For both functions f(x)=0