Question

the sum of the number and it's reciprocal is 13/6 (a) write a second degree equation




plz reply .....emergency​

Answer 1

Any equation in the form of Ax²+Bx+C=0 is a 2nd degree equation where A, B, C belongs to Integers.

You will get this type of equations in class8-9-10.

Solving techniques(2):

•Middle term.

Let a,b be 2 numbers, such that

(A×C)=a×b and a+b=B

How to find (a×b) ?

—> (c da pink-attachment)

Then,

Ax²+Bx+C=0

=> Ax²+(a+b)x+C=0

=>Ax²+ax+bx+C=0

=> x(Ax+a) +b(x+C')=0 , where (Ax+a)will be equal to(x+C')

=> (x+b) (Ax+c) =0

=> (x+b)=0 । => (Ax+c) =0

=> x= (- b) , (- c/A)

•Sridharachariya's theorem.

Ax²+Bx+C=0

=> x = { -B ± sq.root(B²-4AC)} /2A