Question

How to use the discriminant to find out how many real number roots an equation has for 43x2−2x+34=0?

Answer 1

to find the number of roots available, check the highest power , here the power of equation is 2 so it has only 2 roots

you can use discriminant for quadratic equation which has only two roots !!!

to find nature of roots :-

discrminant =b^2-4ac

here b is the coefficients x , a is the coefficient of x^2 and c is constant!

therefore here ,b =-2 and a=43 and c=34

put these values in the b^2- 4ac

you will get your answer

if discrminant =0 means the equation have real and equal roots

if discriminant >0 means it has real and distinct roots

and if doscrminant <0 it mean it has no real root !!

Answer 2

Heya mate..here is ur answer..