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

Trials such as those of the Scottsboro Boys and Tom Robinson have sometimes been referred to as "courtroom lynchings." What do you think this description means?
A proper Assignment ofInventions ofLeonardo da Vinci​
100 points and brainleist Please answer Part b
The constant movement of the surface of the Earth is called _____.
I neeed helpppppp please
Distinguish between different kinds of cardiorespiratory fitness assessments and explain why different tests provide different information about fitness levels.
«Монотонное произнесение, убаюкивающее красоту и отчасти смысл речи, составляет несчастье не только для аудитории, но и для самого говорящего; оно не только н
Convert 5 weeks to days. A. 37 days B. 30 days C. 35 days O D. 32 days
PLEASE PLEASE HELP I WILL GIVE BRAINALIST
Select the correct answer. Read the passage, and then answer the question. Civilization X followed a polytheistic religion. Its people worshipped a number of di