What is the maximum value of 4(x+7)(2-x), over all real numbers ?
Multiply thru to get:
-4x^2-20x+56 This is a dome shaped parabola
max value of 'x' will be at -b/2a where a = -4 and b = -20
when you get this value of 'x' ....put it into the equation to calculate the max vale of the equation
if m<1=(7x-19)and m<2=(x+5)find m<2