Question

Which number is a solution of the inequality?

x(7 – x) > 8

Answer 1

try to plug in the numbers. 2(7-2) = 10. 10 is bigger than 8, so that is the answer (a-2).

Answer 2

actually to solve this:
7x-x^2-8>0
Set that equal to 0 and solve first, then we'll move on from there..

Answer 3

-x^2 + 7x - 8 = 0
x1 = 1.44
x2 = 5.56

Answer 4

Now break this up into intervals..