Quadratic Equation – JEE Main Previous Year Question with Solutions

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why 3 rejected in question 8

Saare pagal ho.

Hat bsdk

Jethiyaaaaaaa!!!!!! Chhadi se maruun gaaa

Hahaha

Chup Saathvi Fail!!

kaise ho jetha ji

can anyone explain me 7th answer how this step is derivated in answer An+2-2An/2An+1 =3

i dont know if u will read this or not but here your answer

x2=6x+2

alpha2=6alpha+2———1

multiply eq1 by alpha^8

alpha^10=6alpha^9+2alpha^8

do the same with bheta and name the eq 2 and then subtract eq 2 from 1

you will get

alpha10-bheta10=alpha9-bheta9+alpha8-bheta8

which will be equal an=alpha^n-bheta^n

a10=6a9+2a8

a10-2a8=6a9

a10-2a8/2a9=3

you welcome

Bhai/bahan itna bhi nahi aata. Chullu bhr pani m duub mr.

Hello everyone

Alright . Why we didn’t consider 3 in 8 question although it’s satisfying the equation? Any one pls

Well, 3 is a solution for x^2 – 5x + 5 = -1, right so the quadratic is power that is X^2 + 4x – 60 should be even as (-1)^even number = 1 and (-1)^odd number = -1. Putting x = 3 in X^2 + 4x – 60 gives and odd number. Hence 3 is rejected.

Realy very good question

where to get more questions sirr

same question

Not bad but, I need clear explanation of why 3 is not included in solution of question number 8

bcs when u substitute it in power ,comes out odd and gives -1

Give some many questions

Scary

I don’t want to leave anything 😠

What

solution of 3rd questions is here.

https://youtu.be/6_abeTAJQbg

More questions 🙏🏼

Plz post September questions

Hi

I can’t understand the 3rd question

You are doing a spectacular job for students.Thank you.

Super for learning the concept in a easy way

Question no 3 answer is 6 which is 4th option please once check

No its 18 check the YouTube vedio in the comment section you will get clarity

THIK THAK S BS

Very less no. Of questions andnot have proper solution of question no. 3

Yes explaining by more steps is good

i didnt understand 3 rd question solution

i didnt understand 3 rd question solution

Low questions and not covered the topic well

Limited questions

Good but limited questions are there

very helpful

It helped me to quick revice of the chapter quadratic equations