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

The proteome is all the proteins produced by an organism. The genome is the totality of all genes of an organism. If the proteome is much larger than the genome
Helpppppppppp plzzzzzzzzzzzzzzzz
2x+3(6x)=-20what is the answer​
the graph represents the function a.) f(x)=-2|x|/3 b.) f(x)=-2|x| c.) f(x)=-3|x|/2 d.) f(x)=-|x|/3
F(x)=5^x if F(-2) what does this equal
¿Qué frase sería parte del mismo discurso? En este momento, por un inmerecido golpe de fortuna, soy la voz directa de los poetas de mi raza y la voz indirecta
Decimal Calculations (Multiplication). An employee earns a salary of $380 for a 40-hour work week. If the employee worked 40 hours plus 14 hours of overtime at
1. An ice cream parlor has 10 options for toppings. You’re going to get exactly 4 of them on your ice cream sundae. Determining the number of assortments of ice
In your opinion is life evaluation or emotional wellbeing more important when considering overall happiness?
Please help me find the perimeter.​