Question

state the formula used to solve a quadratic equation ax2+bx+c=0 by formula method​

Answer 1

Answer:

this formula is called the quadratic formula

it goes like this..

x= -b ± $\sqrt b^2-4ac$ / 2a

or -b ± $\sqrt D$ / 2a

to find D (also known as discriminate)

you have to use the formula

$b^{2} -4ac$

you can find some explanation about the quadratic formula in NCERT class 10 maths textbook

Answer 2

Answer:

this formula is called the quadratic formula

it goes like this..

x= -b ± \sqrt b^2-4ac

b

2

−4ac / 2a

or -b ± \sqrt D

D

/ 2a

to find D (also known as discriminate)

you have to use the formula

b^{2} -4acb

2

−4ac

you can find some explanation about the quadratic formula in NCERT class 10 maths textbook