Question 873177
Given the equation: (1-2X).(X+3): 
1. Find the maximum or minimum value of the function. Show your work. 
2. draw the above function.
***
(1-2x)(x+3)=x-2x^2+3-6x
-2x^2-5x+3
complete the square:
-2(x^2+(5x/2)+25/16)+25/8+3
-2(x+5/4)^2+49/8
This is an equation of a parabola that opens down with vertex at(-5/4,49/8)=(-1.25,6.125)
maximum value=6.125
see graph below:
{{{ graph( 300, 300, -10, 10, -10, 10,-2x^2-5x+3) }}}