Respuesta :

Imma just use calculus for this because this is in the college math section.

f’(x) = 4x + 20;
0 = 4x + 20;
x = -5;
Plug -5 into first equation
y = 2(-5)^2 + (-5*20) + 46;
y = 50 + (-100) + 46;
y = -4;

ANSWER: (-5,-4)