34 Answered Questions for the topic Discriminant

08/21/19

Discriminant: Determine the value of K in given conditions

1.) 5x2 - 6x + ka) Real And Equal (1 root)b) Real And Unequal (2 roots)c) Imaginary (no real roots)

03/01/19

The Discriminant

2x2-7x-9=0 How many times will the graph of this equation cross the x-axis

06/30/18

Discriminant

find exact values of p if px^2 - 2x + 3p = 0 is a negative definiteI have the process to get the answer-p < - 1/√3

01/17/18

x^2 - 2x + 9 = 0...find the discriminant & determine types of solutions?

x2 - 2x + 9 = 0   A.)Find discriminant & determine types of solutions B.)Solve with with quadratic formula

07/06/17

Grade 9 - Discriminant Question

Show that 2kx2 - 2(k+3)x + k + 10/k is always negative for k < 0

05/11/17

help with number of real solutions

2x^2-2x+9=0 I don't know what a discriminant is so I do not understand its purpose.

03/29/17

2x^2 +4x+1=0

find the discriminant for the equation . then determine the nature of solutions for the equation.

02/09/17

use the discriminant to determine the number and type of solutions

3a^2+2a=5 -4p^2+8p=7

05/17/16

Find the set of values for k?

Find the set of values for k for which the line y=2x−k meets the curve y=x2+kx−2 at two distinct points.   I only know you have to use a discriminant. :/

05/04/16

The equation A=(18-x) (15+x) models the new area of the garden. What value of x, if any will give a new area of 280 ft ^2

The Reeve's family garden is 18 ft long and 15f ft wide. They want to decrease the length by x feet and increase the width by the same amount. The equation A=(18-x)(15+x) models the new area of the... more

05/04/16

Please explain how you would find the discriminant of -8x^2 and 3x^2 - 6

I saw these questions on my test and had no clue how to solve them considering that we don't get our tests back, I would like to figure out how to properly do them. I understand that the formula is... more

04/26/16

The length is 15ft longer than the width and enclosed an area covering 1350 square feet. What are the dimensions of the dog's play area?

The manager of a park enclosed an area for small dogs to play. He made the length 15ft longer than the width and enclosed an area covering 1350 square feet. What are the dimensions of the dog's... more

04/26/16

Will a baseball hit straight up with this velocity hit the roof of the Astrodome? Use the discriminant to explain your answer.

In the past, professional baseball was played at the Astrodome in Houston, Texas. The Astrodome has a maximum height of 63.4m. The height of a baseball t seconds after it is hit straight up in the... more

04/05/16

5x^2-10x+5=0

5x^2-10x+5=0

12/06/15

find the following :

Given the equation 4x^2+5x-6=0 what is value of the discriminant?  How many solutions are there and what type? (Ex:1,imaginary)  find the solutions using quadratic formula 

10/17/15

Use the discriminant to describe the roots of each equation. Then select the best description. x2 - 4x + 4 = 0

Use the discriminant to describe the roots of each equation. Then select the best description.x2 - 4x + 4 = 0

07/31/15

What is a discriminant and how do I do this?

Use the discriminant to find the number of real solutions of the equation 3x^2 – 5x + 4 = 0. 

06/25/15

5x^2 - 7x+1 = 0

Compute the value of the discriminant and give the number of real solutions of the quadratic equation  

05/21/15

5x^2 + 7x = 6

What is the value of the discriminant for 5x^2 + 7x = 6 ? How many different real number solutions does the equation have? Thanks SO MUCH for answering! :) 

03/14/15

Find the discriminant and identify the best description of the equation's root(s). 7t^2+sqrt(11t)=4t^2-2

Find the discriminant and identify the best description of the equation's root(s). 7t^2+sqrt(11t)=4t^2−2

03/14/15

Find the discriminant and identify the best description of the equation's root(s). x2+5=sqrt(7x-2)

Find the discriminant and identify the best description of the equation's root(s).  x2+5=sqrt(7x−2)   a. 1 real solution b. 2 complex solutions c. 2 real solutions d. 1 complex solution e. 1... more

02/21/15

The equation of which graph has a negative discriminant?

The equation of which graph has a negative discriminant? A. The graph shows a parabola opening up with a vertex at 2 comma negative 1 B. The graph shows a parabola opening up with a vertex at... more
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