Prove that :-
[tex]x ^{2} + 6x + 15[/tex]
has no zero.
Share
Prove that :-
[tex]x ^{2} + 6x + 15[/tex]
has no zero.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
= 6*6 - 4*1*15
= 36 - 60
= -24
Since D is a negative value, there exist no REAL roots
D = b²-4ac
= 6²-4×1×15
= 36-60
= -24<0
so,the roots of this equation are imaginary,and we say that it has no real roots.