Answer:
a
Step-by-step explanation:
The answer will be
By SSS Congruence
Find critical points by setting derivative equal to 0.
Derivative of polynomial is found by multiplying coefficient by exponent, then subtracting 1 from exponent.
f'(x) = 5x^4 - 30x^2 + 9 = 0
This is in quadratic form, use quadratic formula to find x^2
The equation doesn't make any sense
My answer is C. So good luck!