The number of real roots of \[{{3}^{2{{x}^{2}}-7x+7}}=9\] is
AIEEE Solved Paper-2002
A)zero
B) 2
C) 1
D) 4
Correct Answer:
B
Solution :
If the discriminant of positive, then this equation has two real roots. Given, The-discriminant of this equation is positive. Hence, it has two real roots.