Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

Q&A
Unanswered
Categories
Users
Ask a Question

Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Q&A Categories
BASIC MATH (93)
PRE-ALGEBRA (441)
ALGEBRA 1 (2,216)
GEOMETRY (864)
ALGEBRA 2 (2,745)
TRIGONOMETRY (1,186)
PRECALCULUS (1,903)
CALCULUS (2,791)
STATISTICS (129)
PHYSICS (658)
CHEMISTRY (136)
MECHANICAL ENGINEERING (64)
ELECTRICAL ENGINEERING (207)
Winplot Tutorials (2)

Most popular tags

solving-equations system-of-equations functions math slope-intercept-form physics homework-help trigonometric-identities integration substitution-method limits calculus

13,435 questions

17,804 answers

1,438 comments

777,408 users

What is the value of the discriminant -14x^2+7x+9=0

0 votes

-14x^2+7x+9=0.

discriminant
solving-equations

asked Mar 11, 2014 in ALGEBRA 2 by futai Scholar

Share this question

Google+ Facebook Twitter LinkedIn Reddit

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

0 votes

Given equation -14x^2+7x+9 = 0.

Compare to the quadratic equation ax^2+bx+c = 0.

a = - 14 , b = 7, c = 9.

Discriminant = b ^2 - 4ac.

Substitute the values a , b and c.

( 7 ) ^2 - 4 ( - 14 ) ( 9 ) = 49 + 504 = 553.

Solution : The value of the discriminant is 553.

answered Mar 24, 2014 by friend Mentor

Please log in or register to add a comment.

Related questions

Find the value of the discriminant of each quadratic equation

asked Nov 3, 2018 in ALGEBRA 2 by anonymous

quadratic-equations
discriminant

(a)use the discriminant to classify the graph,(b) use the Quadratic Formula to solve for y.

asked Feb 2, 2015 in TRIGONOMETRY by anonymous

discriminant
graphing-utility
conics

x^2 - 14x + 74 = 0

asked Mar 10, 2014 in ALGEBRA 2 by payton Apprentice

solving-equations
quadratic-equation
quadratic-formula

If y varies directly as x, what is the value of y in these ordered pairs? (4, 16) and (2, y)

asked Mar 4, 2014 in ALGEBRA 2 by payton Apprentice

solving-equations
direct-variation

Short Answer: Find the difference (7x^3-6x^2+6) - (2x^2-4x-9)

asked Mar 12, 2014 in ALGEBRA 2 by harvy0496 Apprentice

solving-equations

7x^2+2y^2+14x-8y+1=0 write equation in standard form for the conics described

asked Nov 20, 2013 in CALCULUS by skylar Apprentice

standard-form-of-an-equation

solve by finding all roots: x^4-5x^3+7x^2-5x+6=0

asked Feb 24, 2014 in ALGEBRA 2 by homeworkhelp Mentor

roots-of-polynomials
solving-equations
polynomial-function

what is the center and radius of the circle x^2 + 4x + y^2 + 2y - 9 = 0?

asked Mar 17, 2014 in ALGEBRA 2 by linda Scholar

center-radius-of-circle
equation-of-the-circle

3x + 6y – 6z = 9, 2x – 5y + 4z = 6 and -x +16y + 14z = -3 what is the answer

asked Feb 20, 2014 in ALGEBRA 2 by abstain12 Apprentice

system-of-equations
solving-equations
substitution-method
elimination-method

Use matrices to solve the following system. What is the value fo y?

asked Mar 17, 2014 in ALGEBRA 2 by payton Apprentice

system-of-equations
solving-equations
using-matrices

solve and check 7x^2-9x-6=0

asked Mar 8, 2014 in ALGEBRA 1 by harvy0496 Apprentice

solving-equations
trinomial-factoring

If x+2y=10 and y+z=20 what is the value of x+3y+z?

asked May 3, 2014 in ALGEBRA 1 by anonymous

solving-equations

What is the leftmost x-intercept and the rightmost of 2x^2-3x-14?

asked Mar 3, 2014 in ALGEBRA 2 by mathgirl Apprentice

x-intercept
solving-equations

What is The Answer For p+3/4=9/10

asked Mar 10, 2014 in ALGEBRA 1 by angel12 Scholar

solving-equations

A circle given by the x^2 + y^2 -2y -11 = 0, what is the value of K?

asked Feb 16, 2016 in PRECALCULUS by hana_24 Novice

equation-of-the-circle
standard-form-of-an-equation

What is the equation of the ellipse with foci at (5, 0), (-5, 0) and vertices (9, 0), (-9, 0)?

asked Sep 9, 2014 in ALGEBRA 2 by tonymate Pupil

equation-of-a-hyperbola
equation-of-an-ellipse
calculus
vertices-foci-and-asymptotes-in-hyperbolas
foci-of-a-hyperbola

What is the greatest common factor of 35x^6 and 7x^2?

asked Feb 20, 2015 in ALGEBRA 2 by anonymous

greatest-common-factor

How do I determine if this ordered pair (0,2) is a solution of the following equation:

asked Mar 13, 2014 in PRE-ALGEBRA by andrew Scholar

solving-equations
ordered-pairs

x^2+7x=-2x^2+6

asked Mar 11, 2014 in ALGEBRA 2 by chrisgirl Apprentice

solving-equations
quadratic-equation

how many roots does f(x)=x^4-x^3-7x^2+5x+10 have

asked Feb 24, 2014 in ALGEBRA 2 by abstain12 Apprentice

roots-of-polynomials
solving-equations

Copyright © 2024 MATHSKEY. All Rights Reserved. Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ

...