jessieCochrane8077 jessieCochrane8077
  • 22-10-2019
  • Mathematics
contestada

Without his pencil or calculator, Joey knows that 2x³+3x²− 1 = 0 has at least one real solution. How does he know?

Respuesta :

hefhamcpep0trxq
hefhamcpep0trxq hefhamcpep0trxq
  • 22-10-2019

Answer: Find the discriminant

Check explanation

Step-by-step explanation:

b^2-4ac

if it is equal to 0 there is no solution

Greater then 0 there is 2 real solution

Less then 0 there is 1 real

3^2-4(2*-1)

9-4(-2)

9(8)

72 there is at least one real solution

Answer Link

Otras preguntas

location is important to a retailer because a. convenient location is an essential customer service element. b. a desirable location appeals to consumers' emoti
how does paying a liability in cash affect the accounting equation? a.assets increase; liabilities decrease b.assets decrease; liabilities decrease c.liabilitie
What is the difference between an element, a compound, and a mixture? Give an example of each.
how long will it take for $1000 to double in an account that is compounded continuously at 8%? round answer to 2 decimal places.
1. Calculate the rate of change for the following data:
(Using Algebra) Find the value of Y Help!!!
How do you use the properties of exponents to simplify an expression?
a culture of bacteria has an initial mass of 7 micrograms at the beginning of an experiment and the mass of the culture of bacteria doubles every hour. write a
Was Jesus born on Christmas Day or Christmas Eve?
Which excerpts from act iii of hamlet show that plot events have resulted in claudius feeling guilty? select 3 options.