SOLUTION: Solve by the quadratic formula: −10x2−31x−15=0 It has to be in fraction form.

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Question 1149178: Solve by the quadratic formula:
−10x2−31x−15=0
It has to be in fraction form.

Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Solve by the quadratic formula:
−10x2−31x−15=0
=================
You entered several similar problems, just different numbers.

Answer by ikleyn(52800)   (Show Source): You can put this solution on YOUR website!
.

Solving quadratic equations is a  BASIC  ELEMENTARY  SKILL  each student  MUST  DEVELOPE  in his  (or her)  school years.

To help the students,  the lessons were created in this site
    - Introduction into Quadratic Equations
    - PROOF of quadratic formula by completing the square
giving the general theory and examples.

Read them and learn on how to solve quadratic equations using the quadratic formula on your own,  once and for all.

Also,  you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook under the topic "Quadratic equations".


Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.


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Hey, in arithmetic, the first basic skill is to know that 2 x 2 = 4.
The second basic skill is to know the multiplication table.


In Algebra, the first basic skill is to know how to solve the simplest lihear equation ax + b = c.
The second basic skill is to know on how to solve a quadratic equation.


Therefore, when you come with questions, similar to that of your post, it is almost as if you come to ask "how many is 2 x 2".



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