Question

-x²+6x+18=0 solve the quadratic equation by factarisaton method​

Answer 1

-x²+6x+18=0

Here A= -1 B= 6 C= 18

With help of Sridhar Acharya's formula

the roots are =(- B ±√B²- 4AC)/2A

=( -6 ±√36 +72)/-2

=( -6 ±√108)/-2

=( -6 ± 6√3)/-2

=6 (-1 ±√3)/-2

= -3( -1 ±√3)

Roots are (3+3√3) and (3-3√3)

PLEASE MARK BRAINLIEST