Brentsclark1738 Brentsclark1738

23-05-2021
Mathematics

contestada

The sum of the roots of 2x 2 + 8x - 3 = 0 is

-3/2
3/2
-4
4

Respuesta :

Аноним Аноним

23-05-2021

Answer:

-4

Step-by-step explanation:

From the qquadratic formula

x1 = [ -b +√(b² - 4ac) ] / 2a

x2 = [ -b -√(b² - 4ac) ] / 2a

When added together the ± square root cancels out leaving

(-b/2a) + (-b/2a) = -b/a

For 2x² + 8x -3 = 0

-b/a = -8/2

-b/a = -4

Answer Link

Otras preguntas

In what way did President Grant's approach to Reconstruction differ from that of President Johnson?

predict the value of y for x = 60. How do I do this?

Rewrite 24/40 as a decimal.

Employers sometimes replace striking workers with other workers called ____.

Which one of the following examples represents a proper fraction? a. 8/8 b. 12/9 c. 3/2 d. 15/22

Meriwether Lewis and William Clark helped open the American frontier to settlement by

What are the basic structures in which objects are grouped together in space?

What is the LCM of two numbers of one number is a multiple of the other?Give an example.

Use the order of operations to simplify the expression.80 - 16 ∙ 4 + 136 ÷ (-17)

Explain why natural selection might favor a high reproduction rate in organisms with type 3 survivorship curves