Answer:
the minimum value is 1/2x^2+4x+15/2 (write down the work below)
Explanation:
f(x)=1/2*(x+3)*(x+5)=0
multiply the parenthesis by 1/2
(1/2x+3/2)*(x+5)
multiply the parenthesis
1/2x^2+5/2x+3/2x+15/2
calculate the equation
1/2x^2+4x+15/2 is you're answer