Question

determine nature of roots of given quadratic equation x²+2x-9=0​

Answer 1

Answer:

x²+2x-9=0 is the given equation.

here a=1 , b=2 ,c = -9

b²-4ac = 2²-4×1×(-9)

= 4 + 36

= 40 > 0

Hence the roots are imaginary

Step-by-step explanation:

we use b²-4ac formula to determine the nature of the roots.

when b²-4ac = 0 then the roots are real and equal.

if b²-4ac <0 then roots are imaginary.

if b²-4ac >0 then roots are real and unequal.