fungsi f (x)=(2x+p)^2+q mempunyai titik balik minimum (-1,3) maka nilai p+q sama dengan... a. 2 b. 4 c. 5 d. 6 e. 7

f(x) = (2x+p)² +q
f(x) = 4x² +4px +p²+q
a= 4 ,b = 4p dan c = p²+q

xp= -b/2a
-1 = -4p/8
p= 2

f(x) = (2x+p)² +q
3 = (2(-1) +2 )²+q
3 = q

jadi p+q = 2+3=5