Which of the following expresses the possible number of positive real solutions for the polynomial equation shown below?
5.x3 + x2 + 7x – 28=0

50-38=12

step-by-step explanation:

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

there is no graph so i cant sorry

step-by-step explanation: