Find the best tutors and institutes for Class 10 Tuition

Find Best Class 10 Tuition

Please select a Category.

Please select a Locality.

No matching category found.

No matching Locality found.

Outside India?

Search for topics

solving quadratic equation in short time

Suraj Deshmukh
29 Aug 0 0

A quadratic equation is very important for a student who studies in 10th std or competitive exam.

I learned one. I've searched before and not so many people know about it, so I'm helping you guys now. It's simple, but it has two rules. Considering this well-known equation:

ax² +bx +c = 0

Rule 1: needs to have exactly the value 1. If the value is like 2 or 1/2, this trick will not work.

Rule 2: The two numbers need to be used in the two equations, with no change.

So, it is basically 

x1 + x2 = -b (x1 and x2 are the two answers you will get if you use the formula

x1 * x2 = c

Your goal is to guess the numbers that work in both of the equations. If it fits in both of them, then it is the two correct answers.


x² -5x +6 = 0

x1 + x2 = -(-5) = 5

x1 * x2 = 6

guessing value of x1 and x2 to be used in both equations.

3 + 2 = 5 (Correct)

3 * 2 = 6 (Correct)

This means that

x1 = 3

x2 = 2

it is answer

I hope this helps!





0 Dislike
Follow 2

Please Enter a comment


Other Lessons for You

Number System
R = Real Numbers: All rational and irrational numbers are called real numbers. I = Integers: All numbers from (…-3, -2, -1, 0, 1, 2, 3…) are called integers. Q = Rational Numbers: Real...

Rahul J. | 25 Sep

0 0

Permutations and Combinations
Suppose there are 'n' number of different things. You would like to 'select' or 'arrange' all or some of those things in an order. In how many unique ways can you do so? Permutations and combinations is...

Prithvi Krishna | 11 Jul

0 0

Looking for Class 10 Tuition ?

Find best Class 10 Tuition in your locality on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Find Best Class 10 Tuition ?

Find Now » is India's largest network of most trusted tutors and institutes. Over 25 lakh students rely on, to fulfill their learning requirements across 1,000+ categories. Using, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 6.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more